1. A History of Greek Mathematics, Volume II: From Aristarchus to Diophantusvolume 2
by Heath, Sir Thomas 
Price: USD 6.59
Dealer: Alibris, ThriftBooks-Atlanta via Alibris
Description: Dover Publications 1981 2nd Revised ed. Softcover Good Pages can have notes/highlighting. Spine may show signs of wear. ~ ThriftBooks: Read More, Spend Less. 

2. A History of Greek Mathematics, Volume II: From Aristarchus to Diophantusvolume 2
by Heath, Sir Thomas 
Price: USD 6.59
Dealer: Alibris, ThriftBooks-Reno via Alibris
Description: Dover Publications 1981 2nd Revised ed. Softcover Good Pages can have notes/highlighting. Spine may show signs of wear. ~ ThriftBooks: Read More, Spend Less. 

3. A History of Greek Mathematics, Volume II: From Aristarchus to Diophantusvolume 2
by Heath, Sir Thomas 
Price: USD 6.59
Dealer: Alibris, ThriftBooks-Dallas via Alibris
Description: Dover Publications 1981 2nd Revised ed. Softcover Fair Readable copy. Pages may have considerable notes/highlighting. ~ ThriftBooks: Read More, Spend Less. 

4. A History of Greek Mathematics, Volume II: From Aristarchus to Diophantusvolume 2
by Heath, Sir Thomas 
Price: USD 6.59
Dealer: Alibris, ThriftBooks-Baltimore via Alibris
Description: Dover Publications 1981 2nd Revised ed. Softcover Good Pages can have notes/highlighting. Spine may show signs of wear. ~ ThriftBooks: Read More, Spend Less. 

5. A History of Greek Mathematics, Volume II: From Aristarchus to Diophantusvolume 2
by Heath, Sir Thomas 
Price: USD 6.59
Dealer: Alibris, ThriftBooks-Baltimore via Alibris
Description: Dover Publications 1981 2nd Revised ed. Softcover Fair Readable copy. Pages may have considerable notes/highlighting. ~ ThriftBooks: Read More, Spend Less. 

6. A History of Greek Mathematics, Volume II: From Aristarchus to Diophantus (Dover Books on Mathematics)
by Heath, Sir Thomas 
Price: USD 6.61
Dealer: Abebooks, HPB-Red
Description: ISBN10: 0486240746, ISBN13: 9780486240749, [publisher: Dover Publications] Softcover Connecting readers with great books since 1972! Used textbooks may not include companion materials such as access codes, etc. May have some wear or writing/highlighting. We ship orders daily and Customer Service is our top priority! [Dallas, TX, U.S.A.] [Publication Year: 1981]  

7. A History of Greek Mathematics, Volume II: From Aristarchus to Diophantus (Dover Books on Mathematics)
by Heath, Sir Thomas 
Price: USD 7.15
Dealer: Alibris, HPB-Red via Alibris
Description: Dover Publications 1981 2nd Revised ed. Paperback Good Connecting readers with great books since 1972! Used textbooks may not include companion materials such as access codes, etc. May have some wear or writing/highlighting. We ship orders daily and Customer Service is our top priority! 

8. A History of Greek Mathematics, Volume II: From Aristarchus to Diophantus (Dover Books on Mathematics)
by Heath, Sir Thomas 
Price: USD 10.56
Dealer: Abebooks, SecondSale
Description: ISBN10: 0486240746, ISBN13: 9780486240749, [publisher: Dover Publications] Softcover Item in good condition. Textbooks may not include supplemental items i.e. CDs, access codes etc. [Montgomery, IL, U.S.A.] [Publication Year: 1981]  

9. A History of Greek Mathematics : From Aristarchus to Diophantus
by Thomas Heath 
Price: USD 10.59
Dealer: Biblio, ThriftBooks
Description: Dover Publications, Incorporated, Date: 1981. Paperback. Acceptable. Disclaimer:Readable copy. Pages may have considerable notes/highlighting. ~ ThriftBooks: Read More, Spend Less.Dust jacket quality is not guaranteed. 1981. Dover Publications, Incorporated ISBN 0486240746 9780486240749 [US] 

10. A History of Greek Mathematics : From Aristarchus to Diophantus
by Thomas Heath 
Price: USD 10.59
Dealer: Biblio, ThriftBooks
Description: Dover Publications, Incorporated, Date: 1981. Paperback. Good. Disclaimer:A copy that has been read, but remains in clean condition. All pages are intact, and the cover is intact. The spine may show signs of wear. Pages can include limited notes and highlighting, and the copy can include previous owner inscriptions. At ThriftBooks, our motto is: Read More, Spend Less.Dust jacket quality is not guaranteed. 1981. Dover Publications, Incorporated ISBN 0486240746 9780486240749 [US] 

11. A History of Greek Mathematics, Volume II: From Aristarchus to Diophantusvolume 2
by Heath, Sir Thomas 
Price: USD 10.59
Dealer: Abebooks, ThriftBooks-Dallas
Description: ISBN10: 0486240746, ISBN13: 9780486240749, [publisher: Dover Publications] Softcover Pages can have notes/highlighting. Spine may show signs of wear. ~ ThriftBooks: Read More, Spend Less 1.48 [Dallas, TX, U.S.A.] [Publication Year: 1981]  

12. A History of Greek Mathematics, Volume II: From Aristarchus to Diophantusvolume 2
by Heath, Sir Thomas 
Price: USD 10.59
Dealer: Abebooks, ThriftBooks-Atlanta
Description: ISBN10: 0486240746, ISBN13: 9780486240749, [publisher: Dover Publications] Softcover Pages can have notes/highlighting. Spine may show signs of wear. ~ ThriftBooks: Read More, Spend Less 1.48 [AUSTELL, GA, U.S.A.] [Publication Year: 1981]  

13. A History of Greek Mathematics, Volume II: From Aristarchus to Diophantusvolume 2
by Heath, Sir Thomas 
Price: USD 10.59
Dealer: Abebooks, ThriftBooks-Reno
Description: ISBN10: 0486240746, ISBN13: 9780486240749, [publisher: Dover Publications] Softcover Pages can have notes/highlighting. Spine may show signs of wear. ~ ThriftBooks: Read More, Spend Less 1.48 [Reno, NV, U.S.A.] [Publication Year: 1981]  

14. A History of Greek Mathematics : From Aristarchus to Diophantus
by Heath, Thomas 
Price: USD 11.07
Dealer: ZVAB, Better World Books
Description: ISBN10: 0486240746, ISBN13: 9780486240749, [publisher: Dover Publications, Incorporated] Softcover Used book that is in clean, average condition without any missing pages. [Mishawaka, IN, U.S.A.] [Publication Year: 1981]  

15. A History of Greek Mathematics : From Aristarchus to Diophantus
by Heath, Thomas 
Price: USD 11.47
Dealer: Abebooks, Better World Books
Description: ISBN10: 0486240746, ISBN13: 9780486240749, [publisher: Dover Publications, Incorporated] Softcover Used book that is in clean, average condition without any missing pages. [Mishawaka, IN, U.S.A.] [Publication Year: 1981]  

16. A History of Greek Mathematics : From Aristarchus to Diophantus
by Heath Thomas 
Price: USD 11.66
Dealer: Biblio, Better World Books
Description: Dover Publications, Incorporated. Used - Good. Used book that is in clean, average condition without any missing pages. Dover Publications, Incorporated ISBN 0486240746 9780486240749 [US] 

17. History of Greek Mathematics, Volume II: From Aristarchus to Diophantus: 2
by HEATH, SIR THOMAS 
Price: USD 13.31
Dealer: AbebooksUK, Pieuler Store
Description: ISBN10: 0486240746, ISBN13: 9780486240749, [publisher: Dover Publications] Softcover 100% Customer Satisfaction Guaranteed ! The book shows some signs of wear from use but is a good readable copy. Cover in excellent condition. Binding tight. Pages in great shape, no tears. Not contain access codes, cd, DVD. [Suffolk, United Kingdom] [Publication Year: 1981]  

18. A History of Greek Mathematics Volume II: From Aristarchus to Diophantus Dover Books on Mathematics
by Heath Sir Thomas 
Price: USD 13.33
Dealer: Biblio, Mediaoutletdeal1
Description: Dover Publications, Date: 1981-05-01. Paperback. New. 1981. Dover Publications ISBN 0486240746 9780486240749 [US] 

19. History of Greek Mathematics: From Aristarchus to Diophantus v.2: From Aristarchus to Diophantusvolume 2 (Dover Books on MaTHEMA 1.4tics)
by Heath, Sir Thomas 
Price: USD 13.49
Dealer: Abebooks, Sparrow Reads
Description: ISBN10: 0486240746, ISBN13: 9780486240749, [publisher: Dover Publications Inc] Softcover [Edgewood, NM, U.S.A.] [Publication Year: 2017]  

20. A History of Greek Mathematics, Volume II: From Aristarchus to Diophantusvolume 2
by Heath, Sir Thomas 
Price: USD 13.51
Dealer: Alibris
Description: New York, NY Dover Publications 1981 2nd Revised ed. Trade paperback New. Trade paperback (US). Glued binding. 608 p. Contains: Illustrations. Dover Books on Mathematics, 2. 

21. A History of Greek Mathematics, Volume II: From Aristarchus to Diophantus (Dover Books on Mathematics)
by Heath, Sir Thomas 
Price: USD 14.49
Dealer: Abebooks, Book Deals
Description: ISBN10: 0486240746, ISBN13: 9780486240749, [publisher: Dover Publications] Softcover Good condition. This is the average used book, that has all pages or leaves present, but may include writing. Book may be ex-library with stamps and stickers. [Tucson, AZ, U.S.A.] [Publication Year: 1981]  

22. History of Greek Mathematics : From Aristarchus to Diophantus
by Heath, Thomas Little, Sir 
Price: USD 14.72
Dealer: Abebooks, GreatBookPrices
Description: ISBN10: 0486240746, ISBN13: 9780486240749, [publisher: Dover Publications] Softcover [Columbia, MD, U.S.A.] [Publication Year: 1981]  

23. A History of Greek Mathematics Volume II: From Aristarchus to Diophantus Dover Books on Mathematics
by Heath Sir Thomas 
Price: USD 14.76
Dealer: Biblio, Ergodebooks
Description: Dover Publications, Date: 1981-05-01. 2nd Revised ed. paperback. Used: Good. 1981. Dover Publications ISBN 0486240746 9780486240749 [US] 

24. A History of Greek Mathematics Volume II Fromm Aristarchus to Diophantus
by Heath Sir Thomas 
Price: USD 15.00
Dealer: Biblio, Chequamegon Book Company
Description: New York: Dover, Date: 1981. Paperback. Very Good. 586 pages. unabridged republication of the 1921 Oxford University Press edition. This is volume two only. ; 5 5/8 x 8 1/4 1981. Dover ISBN 0486240746 9780486240749 [US] 

25. A History of Greek Mathematics Volume II Fromm Aristarchus to Diophantus
by Heath, Sir Thomas 
Price: USD 15.00
Dealer: Abebooks, Chequamegon Books
Description: ISBN10: 0486240746, ISBN13: 9780486240749, [publisher: Dover, New York] Softcover 586 pages. unabridged republication of the 1921 Oxford University Press edition. This is volume two only. ; 5 5/8 x 8 1/4 " [Washburn, WI, U.S.A.] [Publication Year: 1981]  

26. A History of Greek Mathematics, Volume II: From Aristarchus to Diophantus (Dover Books on Mathematics)
by Heath, Sir Thomas 
Price: USD 16.29
Dealer: Alibris, SurplusTextSeller via Alibris
Description: Dover Publications 1981 2nd Revised ed. Trade paperback New Ships in a BOX from Central Missouri! UPS shipping for most packages, (Priority Mail for AK/HI/APO/PO Boxes). 

27. A History of Greek Mathematics, Volume II: From Aristarchus to Diophantus (Dover Books on Mathematics)
by Heath, Sir Thomas 
Price: USD 16.29
Dealer: Abebooks, Textbooks_Source
Description: ISBN10: 0486240746, ISBN13: 9780486240749, [publisher: Dover Publications] Softcover Ships in a BOX from Central Missouri! UPS shipping for most packages, (Priority Mail for AK/HI/APO/PO Boxes). [Columbia, MO, U.S.A.] [Publication Year: 1981]  

28. A History of Greek Mathematics Volume II: From Aristarchus to Diophantus Dover Books on Mathematics
by Heath Sir Thomas 
Price: USD 16.47
Dealer: Biblio, Mediaoutletdeal1
Description: Dover Publications, Date: 1981-05-01. Paperback. Like New. 1981. Dover Publications ISBN 0486240746 9780486240749 [US] 

29. A History of Greek Mathematics, Volume II: From Aristarchus to Diophantus (Dover Books on Mathematics)
by Heath, Sir Thomas 
Price: USD 19.24
Dealer: AbebooksUK, Bookworm
Description: ISBN10: 0486240746, ISBN13: 9780486240749, [publisher: Dover Publications] Softcover [Tewkesbury, United Kingdom] [Publication Year: 1981]  

30. A History of Greek Mathematics, Volume II: From Aristarchus to Diophantus (Dover Books on Mathematics)
by Heath, Sir Thomas 
Price: USD 21.77
Dealer: Abebooks, GoldenWavesOfBooks
Description: ISBN10: 0486240746, ISBN13: 9780486240749, [publisher: Dover Publications] Softcover New. Fast Shipping and good customer service [Fayetteville, TX, U.S.A.] [Publication Year: 1981]  

31. History of Greek Mathematics: from Aristarchus to Diophantus V.2 (Paperback)
by Sir Thomas Heath 
Price: USD 22.06
Dealer: Abebooks, Grand Eagle Retail
Description: ISBN10: 0486240746, ISBN13: 9780486240749, [publisher: Dover Publications Inc., New York] Softcover Paperback. ""As it is, the book is indispensable; it has, indeed, no serious English rival."" - Times Literary Supplement""Sir Thomas Heath, foremost English historian of the ancient exact sciences in the twentieth century."" - Prof. W. H. Stahl""Indeed, seeing that so much of Greek is mathematics, it is arguable that, if one would understand the Greek genius fully, it would be a good plan to begin with their geometry.""The perspective that enabled Sir Thomas Heath to understand the Greek genius - deep intimacy with languages, literatures, philosophy, and all the sciences - brought him perhaps closer to his beloved subjects, and to their own ideal of educated men than is common or even possible today. Heath read the original texts with a critical, scrupulous eye and brought to this definitive two-volume history the insights of a mathematician communicated with the clarity of classically taught English.""Of all the manifestations of the Greek genius none is more impressive and even awe-inspiring than that which is revealed by the history of Greek mathematics."" Heath records that history with the scholarly comprehension and comprehensiveness that marks this work as obviously classic now as when it first appeared in 1921. The linkage and unity of mathematics and philosophy suggest the outline for the entire history. Heath covers in sequence Greek numerical notation, Pythagorean arithmetic, Thales and Pythagorean geometry, Zeno, Plato, Euclid, Aristarchus, Archimedes, Apollonius, Hipparchus and trigonometry, Ptolemy, Heron, Pappus, Diophantus of Alexandria and the algebra. Interspersed are sections devoted to the history and analysis of famous problems: squaring the circle, angle trisection, duplication of the cube, and an appendix on Archimedes's proof of the subtangent property of a spiral. The coverage is everywhere thorough and judicious; but Heath is not content with plain exposition: It is a defect in the existing histories that, while they state generally the contents of, and the main propositions proved in, the great treatises of Archimedes and Apollonius, they make little attempt to describe the procedure by which the results are obtained. I have therefore taken pains, in the most significant cases, to show the course of the argument in sufficient detail to enable a competent mathematician to grasp the method used and to apply it, if he will, to other similar investigations.Mathematicians, then, will rejoice to find Heath back in print and accessible after many years. Historians of Greek culture and science can renew acquaintance with a standard reference; readers in general will find, particularly in the energetic discourses on Euclid and Archimedes, exactly what Heath means by impressive and awe-inspiring. Volume 2 of an authoritative two-volume set that covers the essentials of mathematics and features every landmark innovation and every important figure, including Euclid, Apollonius, and others. Shipping may be from multiple locations in the US or from the UK, depending on stock availability. [Wilmington, DE, U.S.A.] [Publication Year: 2003]  

32. A History of Greek Mathematics, Volume II: From Aristarchus to Diophantus
by Heath, Thomas 
Price: USD 23.07
Dealer: ZVAB, moluna
Description: ISBN10: 0486240746, ISBN13: 9780486240749, [publisher: DOVER PUBN INC] Softcover &Uumlber den AutorrnrnThomas Little Heath: Bringing the Past to LifenThomas Little Heath (1861-1940) was unusual for an authority on many esoteric, and many less esoteric, subjects in the history of mathematics in that he was never a university. [Greven, Germany] [Publication Year: 1981]  

33. A History of Greek Mathematics Volume II: From Aristarchus to Diophantus Dover Books on Mathematics
by Heath Sir Thomas 
Price: USD 23.15
Dealer: Biblio, Ergodebooks
Description: Dover Publications, Date: 1981-05-01. 2nd Revised ed. paperback. Used:Good. 1981. Dover Publications ISBN 0486240746 9780486240749 [US] 

34. A History of Greek Mathematics (Volume 2): From Aristarchus to Dophantus
by Heath, T 
Price: USD 24.42
Dealer: ZVAB, Anybook.com
Description: ISBN10: 0486240746, ISBN13: 9780486240749, [publisher: Dover Publications Inc.] Softcover Volume 2. This is an ex-library book and may have the usual library/used-book markings inside.This book has soft covers. Clean from markings. In good all round condition. Please note the Image in this listing is a stock photo and may not match the covers of the actual item,700grams, ISBN:9780486240749 [Lincoln, United Kingdom] [Publication Year: 1981]  

35. History of Greek Mathematics
by SIR Heath Thomas 
Price: USD 24.51
Dealer: AbebooksUK, Majestic Books
Description: ISBN10: 0486240746, ISBN13: 9780486240749, [publisher: Dover Publications, Incorporated] Softcover pp. 597 [Hounslow, United Kingdom] [Publication Year: 1981]  

36. History of Greek Mathematics, Volume II: From Aristarchus to Diophantus: 2
by HEATH, SIR THOMAS 
Price: USD 24.72
Dealer: AbebooksUK, Pieuler Store
Description: ISBN10: 0486240746, ISBN13: 9780486240749, [publisher: Dover Publications] Softcover Book is in NEW condition. Satisfaction Guaranteed! Fast Customer Service!! [Suffolk, United Kingdom] [Publication Year: 1981]  

37. A History of Greek Mathematics, Volume II: From Aristarchus to Diophantus
by Heath, Thomas 
Price: USD 25.35
Dealer: AbebooksDE, moluna
Description: ISBN10: 0486240746, ISBN13: 9780486240749, [publisher: DOVER PUBN INC] Softcover &Uumlber den AutorrnrnThomas Little Heath: Bringing the Past to LifenThomas Little Heath (1861-1940) was unusual for an authority on many esoteric, and many less esoteric, subjects in the history of mathematics in that he was never a university. [Greven, Germany] [Publication Year: 1981]  

38. A History of Greek Mathematics Volume 2: From Aristarchus to Dophantus
by Heath T 
Price: USD 25.62
Dealer: Biblio, Anybook.com
Description: Dover Publications Inc., Date: 1981. Volume 2. This is an ex-library book and may have the usual library/used-book markings inside.This book has soft covers. Clean from markings. In good all round condition. Please note the Image in this listing is a stock photo and may not match the covers of the actual item,700grams, ISBN:9780486240749 1981. Dover Publications Inc. ISBN 0486240746 9780486240749 [GB] 

39. History of Greek Mathematics: From Aristarchus to Diophantus: Vol 002
by Sir Thomas Heath 
Price: USD 25.67
Dealer: Biblio, Revaluation Books
Description: Dover Pubns, Date: 1981. Paperback. New. 2nd edition. 608 pages. 8.25x5.75x1.25 inches. 1981. Dover Pubns ISBN 0486240746 9780486240749 [GB] 

40. A History of Greek Mathematics (Volume 2): From Aristarchus to Dophantus
by Heath, T 
Price: USD 26.05
Dealer: AbebooksUK, Anybook.com
Description: ISBN10: 0486240746, ISBN13: 9780486240749, [publisher: Dover Publications Inc.] Softcover Volume 2. This is an ex-library book and may have the usual library/used-book markings inside.This book has soft covers. Clean from markings. In good all round condition. Please note the Image in this listing is a stock photo and may not match the covers of the actual item,700grams, ISBN:9780486240749 [Lincoln, United Kingdom] [Publication Year: 1981]  

41. History of Greek Mathematics: From Aristarchus to Diophantus: Vol 002
by Sir Thomas Heath 
Price: USD 26.10
Dealer: AbebooksUK, Revaluation Books
Description: ISBN10: 0486240746, ISBN13: 9780486240749, [publisher: Dover Pubns] Softcover 2nd edition. 608 pages. 8.25x5.75x1.25 inches. In Stock. [Exeter, United Kingdom] [Publication Year: 1981]  

42. History of Greek Mathematics
by SIR Thomas Heath 
Price: USD 26.70
Dealer: Biblio, Cold Books
Description: Dover Publications, Incorporated , pp. 597 . Other. New. Dover Publications, Incorporated ISBN 0486240746 9780486240749 [US] 

43. History of Greek Mathematics
by SIR Thomas Heath 
Price: USD 26.81
Dealer: Abebooks, Books Puddle
Description: ISBN10: 0486240746, ISBN13: 9780486240749, [publisher: Dover Publications, Incorporated] Softcover pp. 597 [New York, NY, U.S.A.] [Publication Year: 1981]  

44. History of Greek Mathematics : From Aristarchus to Diophantus
by Heath, Thomas Little, Sir 
Price: USD 28.29
Dealer: AbebooksUK, GreatBookPricesUK
Description: ISBN10: 0486240746, ISBN13: 9780486240749, [publisher: Dover Publications] Softcover [Castle Donington, DERBY, United Kingdom] [Publication Year: 1981]  

45. History of Greek Mathematics: From Aristarchus to Diophantus: Vol 002
by Sir Thomas Heath 
Price: USD 28.81
Dealer: Biblio, Revaluation Books
Description: Dover Pubns, Date: 1981. Paperback. New. 2nd edition. 608 pages. 8.25x5.75x1.25 inches. 1981. Dover Pubns ISBN 0486240746 9780486240749 [GB] 

46. History of Greek Mathematics: From Aristarchus to Diophantus: Vol 002
by Sir Thomas Heath 
Price: USD 29.30
Dealer: AbebooksUK, Revaluation Books
Description: ISBN10: 0486240746, ISBN13: 9780486240749, [publisher: Dover Pubns] Softcover 2nd edition. 608 pages. 8.25x5.75x1.25 inches. In Stock. [Exeter, United Kingdom] [Publication Year: 1981]  

47. A History of Greek Mathematics: From Aristarchus to Diophantus (Volume 2)
by Heath, T. 
Price: USD 29.58
Dealer: ZVAB, Anybook.com
Description: ISBN10: 0486240746, ISBN13: 9780486240749, [publisher: Dover Publications] Softcover Volume 2. This is an ex-library book and may have the usual library/used-book markings inside.This book has soft covers. Clean from markings. In good all round condition. Please note the Image in this listing is a stock photo and may not match the covers of the actual item,700grams, ISBN:9780486240749 [Lincoln, United Kingdom] [Publication Year: 1981]  

48. A History of Greek Mathematics, Volume II: From Aristarchus to Diophantus (Dover Books on Mathematics)
by Heath, Sir Thomas 
Price: USD 30.14
Dealer: Abebooks, Front Cover Books
Description: ISBN10: 0486240746, ISBN13: 9780486240749, [publisher: Dover Publications] Softcover [Denver, CO, U.S.A.] [Publication Year: 1981]  

49. A History of Greek Mathematics: From Aristarchus to Diophantus Volume 2
by Heath T. 
Price: USD 31.03
Dealer: Biblio, Anybook.com
Description: Dover Publications , Date: 1981. Volume 2. This is an ex-library book and may have the usual library/used-book markings inside.This book has soft covers. Clean from markings. In good all round condition. Please note the Image in this listing is a stock photo and may not match the covers of the actual item,700grams, ISBN:9780486240749 1981. Dover Publications ISBN 0486240746 9780486240749 [GB] 

50. A History of Greek Mathematics: From Aristarchus to Diophantus (Volume 2)
by Heath, T. 
Price: USD 31.56
Dealer: AbebooksUK, Anybook.com
Description: ISBN10: 0486240746, ISBN13: 9780486240749, [publisher: Dover Publications] Softcover Volume 2. This is an ex-library book and may have the usual library/used-book markings inside.This book has soft covers. Clean from markings. In good all round condition. Please note the Image in this listing is a stock photo and may not match the covers of the actual item,700grams, ISBN:9780486240749 [Lincoln, United Kingdom] [Publication Year: 1981]