1. Toward a More Natural Science : Biology and Human Affairs
by Kass Leon R 
Price: USD 7.24
Dealer: Biblio, Better World Books
Description: Free Press. Used - Very Good. Former library book; may include library markings. Used book that is in excellent condition. May show signs of wear or have minor defects. Free Press ISBN 0029183405 9780029183403 [US] 

2. Toward a More Natural Science : Biology and Human Affairs
by Kass Leon R 
Price: USD 6.88
Dealer: Biblio, Better World Books
Description: Free Press. Used - Good. Former library book; may include library markings. Used book that is in clean, average condition without any missing pages. Free Press ISBN 0029183405 9780029183403 [US] 

3. Toward a More Natural Science : Biology and Human Affairs
by Kass Leon R 
Price: USD 6.88
Dealer: Biblio, Better World Books
Description: Free Press. Used - Good. Former library book; may include library markings. Used book that is in clean, average condition without any missing pages. Free Press ISBN 0029183405 9780029183403 [US] 

4. Toward a More Natural Science : Biology and Human Affairs
by Leon R. Kass 
Price: USD 7.67
Dealer: Biblio, ThriftBooks
Description: Free Press, Date: 1985. Hardcover. Good. Missing dust jacket; Pages can have notes/highlighting. Spine may show signs of wear. ~ ThriftBooks: Read More, Spend Less.Dust jacket quality is not guaranteed. 1985. Free Press ISBN 0029183405 9780029183403 [US] 

5. Toward a More Natural Science : Biology and Human Affairs
by Kass, Leon R. 
Price: USD 6.60
Dealer: Abebooks, Better World Books: West
Description: ISBN10: 0029183405, ISBN13: 9780029183403, [publisher: Free Press] Hardcover Former library book; may include library markings. Used book that is in clean, average condition without any missing pages. [Reno, NV, U.S.A.] [Publication Year: 1985]  

6. Toward a More Natural Science : Biology and Human Affairs
by Kass, Leon R. 
Price: USD 6.60
Dealer: Abebooks, Better World Books
Description: ISBN10: 0029183405, ISBN13: 9780029183403, [publisher: Free Press] Hardcover Former library book; may include library markings. Used book that is in excellent condition. May show signs of wear or have minor defects. [Mishawaka, IN, U.S.A.] [Publication Year: 1985]  

7. Toward a More Natural Science : Biology and Human Affairs
by Kass, Leon R. 
Price: USD 6.31
Dealer: ZVAB, Better World Books
Description: ISBN10: 0029183405, ISBN13: 9780029183403, [publisher: Free Press] Hardcover Former library book; may include library markings. Used book that is in excellent condition. May show signs of wear or have minor defects. [Mishawaka, IN, U.S.A.] [Publication Year: 1985]  

8. TOWARD A MORE NATURAL SCIENCE: B
by Kass, Leon R. 
Price: USD 82.43
Dealer: Abebooks, BennettBooksLtd
Description: ISBN10: 0029183405, ISBN13: 9780029183403, [publisher: Free Pr] Hardcover New. In shrink wrap. Looks like an interesting title! 1.85 [North Las Vegas, NV, U.S.A.] [Publication Year: 1985]  

9. Toward a More Natural Science: Biology & Human Affairs
by Kass, Leon R. 
Price: USD 17.25
Dealer: Abebooks, Bear Bookshop, John Greenberg
Description: ISBN10: 0029183405, ISBN13: 9780029183403, [publisher: Free Press/Macmillan. NY. (c1985).] Hardcover First Edition 370pp. 8vo Black & white line illustrations. Green cloth. 1st Printing. Fine/in heavily sunned, else Near Fine dj. 0-02-918340-5 [Brattleboro, VT, U.S.A.] [Publication Year: 1985]  

10. Toward a More Natural Science: Biology and Human Affairs
by Kass Leon R. 
Price: USD 15.00
Dealer: ABAA, Kenneth Mallory Bookseller. ABAA
Description: NY: Free Press, Date: 1985. Hardcover. Very Good. Hardcover. First Edition. xiv, 359pp+ index. Very good hardback in a jacket that is sunned on the spine. 1985. Free Press ISBN 0029183405 US 

11. Toward a More Natural Science: Biology and Human Affairs
by Kass Leon R. 
Price: USD 50.00
Dealer: Biblio, CMSRAREBOOKS
Description: Free Pr, Date: 1985. 1st Edition. . Hardcover. New. STORED NEW 1985. Free Pr ISBN 0029183405 9780029183403 [US] 

12. Toward a More Natural Science: Biology and Human Affairs
by Kass Leon R. 
Price: USD 15.00
Dealer: Biblio, Kenneth Mallory Bookseller. ABAA
Description: NY: Free Press, Date: 1985. Hardcover. Very Good. Hardcover. First Edition. xiv, 359pp+ index. Very good hardback in a jacket that is sunned on the spine. 1985. Free Press ISBN 0029183405 9780029183403 [US] 

13. Toward a More Natural Science: Biology and Human Affairs
by Kass Leon R. 
Price: USD 7.67
Dealer: Biblio, ThriftBooks
Description: Free Press, Date: 1985. Hardcover. Like New. Pages are clean and are not marred by notes or folds of any kind. ~ ThriftBooks: Read More, Spend Less.Dust jacket quality is not guaranteed. 1985. Free Press ISBN 0029183405 9780029183403 [US] 

14. Toward a More Natural Science: Biology and Human Affairs
by Kass Leon R. 
Price: USD 8.21
Dealer: Biblio, Wonder Book
Description: Free Pr. Used - Very Good. Very Good condition. Good dust jacket. A copy that may have a few cosmetic defects. May also contain light spine creasing or a few markings such as an owner’s name, short gifter’s inscription or light stamp. Bundled media such as CDs, DVDs, floppy disks or access codes may not be included. Free Pr ISBN 0029183405 9780029183403 [US] 

15. Toward a More Natural Science: Biology and Human Affairs
by Kass Leon R 
Price: USD 86.55
Dealer: Biblio, GridFreed LLC
Description: Free Pr, Date: 1985-05-01. Hardcover. New. New. In shrink wrap. Looks like an interesting title! 1985. Free Pr ISBN 0029183405 9780029183403 [US] 

16. Toward a More Natural Science: Biology and Human Affairs
by Kass Leon R 
Price: USD 14.50
Dealer: Biblio, Powell's Bookstores Chicago
Description: Free Pr. Used - Very Good. 1985. Hardcover. Cloth, no d.j. Some shelf-wear. Else clean copy. Very Good. (Subject: Biology). Free Pr ISBN 0029183405 9780029183403 [US] 

17. Toward a More Natural Science: Biology and Human Affairs
by Leon R. Kass 
Price: USD 10.09
Dealer: Biblio, Ergodebooks
Description: Free Pr, Date: 1985-05. Hardcover. Used: Good. 1985. Free Pr ISBN 0029183405 9780029183403 [US] 

18. Toward a More Natural Science: Biology and Human Affairs
by Leon R. Kass 
Price: USD 43.47
Dealer: Biblio, Ergodebooks
Description: Free Pr, Date: 1985-05-01. Hardcover. Used:Good. 1985. Free Pr ISBN 0029183405 9780029183403 [US] 

19. TOWARD A MORE NATURAL SCIENCE: BIOLOGY AND HUMAN AFFAIRS.
by Kass, Leon R., M.D. 
Price: USD 22.00
Dealer: Abebooks, de Wit Books
Description: ISBN10: 0029183405, ISBN13: 9780029183403, [publisher: NY: Free Press c. 1985.] Hardcover VG+, unmarked Hardback; DJ-VG. xiv + 370 pp. [HUTCHINSON, KS, U.S.A.] [Publication Year: 1985]  

20. Toward a More Natural Science: Biology and Human Affairs
by Kass, Leon R. , M. D. 
Price: USD 22.00
Dealer: Alibris, de Wit Books via Alibris
Description: NY: Free Press c. 1985 Hard cover VG+, unmarked Hardback; DJ-VG. xiv + 370 pp. 

21. Toward a More Natural Science: Biology and Human Affairs
by Kass, Leon R. 
Price: USD 14.00
Dealer: Alibris, Bob's Book Journey via Alibris
Description: New York Free Press 1985 First Printing Hardcover Near Fine in Near Fine jacket Book. 8vo-over 7¾-9¾" tall. Navy-blue hardcover with gold-color lettering on spine, xiv, 370 pp., b/w illus., unclipped illustrated jacket. Tiny mark on fore edge otherwise minimal wear, no owner names or gift notes, clean text, tight binding, very slightly worn jacket in nice condition overall. With seemingly limitless power to create new life forms, grow human embryos in the laboratory, alter genes, modify behavior through drugs, transplant organs, prolong life, and make "perfect" babies, today's science raises disturbing ethical questions. 

22. Toward a More Natural Science: Biology and Human Affairs
by Kass, Leon R. 
Price: USD 15.00
Dealer: Alibris, Bookfeathers LLC via Alibris
Description: Free Press 1985 Hardcover NF in NF jacket A heavy item: non-U.S. shipping may require extra fees; please inquire. Not ex-lib. Hardcover in black cloth, in greenish-tan jacket with green and black titles and tree figure, 8vo. xiv + 370pp. Index, endnotes, figures in last chapter. NF/NF. Book has bumped upper front corners; prev. owner's marked over bookplate to front pastedwon. Jacket has shallow creases and softening at bumped upper coenrs and spine ends. Book and jacket are otherwise Fine: clea, tight, square and unmarked. Jacket in Brodart. News article by George F. Will referring to book laid-in in rear. 

23. Toward a More Natural Science: Biology and Human Affairs
by Kass, Leon R. 
Price: USD 49.50
Dealer: Alibris, Chidoc5 Rare Books via Alibris
Description: Free Pr 1985 Hardcover New STORED NEW. 

24. Toward a More Natural Science: Biology and Human Affairs
by Kass, Leon R. 
Price: USD 82.43
Dealer: Alibris, GridFreed via Alibris
Description: Free Pr 1985-05-01 Hardcover New Size: 9x6x1; New. In shrink wrap. Looks like an interesting title! 

25. Toward a More Natural Science: Biology and Human Affairs
by Kass, Leon R. 
Price: USD 15.00
Dealer: Alibris, Kenneth Mallory, ABAA via Alibris
Description: NY Free Press 1985 Hardcover Very Good Hardcover. First Edition. xiv, 359pp+ index. Very good hardback in a jacket that is sunned on the spine. 

26. Toward a More Natural Science: Biology and Human Affairs
by Kass, Leon R. 
Price: USD 15.00
Dealer: Alibris, Powell's Books Chicago via Alibris
Description: Free Press 1985 Hard cover Very Good 1985. Hardcover. Cloth, no d.j. Some shelf-wear. Else clean copy. Very Good. (Subject: Biology). 

27. Toward a More Natural Science: Biology and Human Affairs
by Kass, Leon R. 
Price: USD 3.67
Dealer: Alibris, ThriftBooks-Dallas via Alibris
Description: Free Press 1985 Hardcover Good Missing dust jacket; Pages can have notes/highlighting. Spine may show signs of wear. ~ ThriftBooks: Read More, Spend Less. 

28. Toward a More Natural Science: Biology and Human Affairs
by Kass, Leon R. 
Price: USD 3.67
Dealer: Alibris, ThriftBooks-Dallas via Alibris
Description: Free Press 1985 Hardcover Fine Pages are clean and are not marred by notes or folds of any kind. ~ ThriftBooks: Read More, Spend Less. 

29. Toward a More Natural Science: Biology and Human Affairs
by Kass, Leon R. 
Price: USD 6.29
Dealer: Alibris, Wonder Book - Member ABAA/ILAB via Alibris
Description: Free Press 1985 Hard cover Very Good Very Good condition. Good dust jacket. A copy that may have a few cosmetic defects. May also contain light spine creasing or a few markings such as an owner's name, short gifter's inscription or light stamp. Bundled media such as CDs, DVDs, floppy disks or access codes may not be included. 

30. Toward a More Natural Science: Biology and Human Affairs
by Kass, Leon R. 
Price: USD 14.00
Dealer: Abebooks, Bob's Book Journey
Description: ISBN10: 0029183405, ISBN13: 9780029183403, [publisher: Free Press, New York] Hardcover First Edition Navy-blue hardcover with gold-color lettering on spine, xiv, 370 pp., b/w illus., unclipped illustrated jacket. Tiny mark on fore edge otherwise minimal wear, no owner names or gift notes, clean text, tight binding, very slightly worn jacket in nice condition overall. With seemingly limitless power to create new life forms, grow human embryos in the laboratory, alter genes, modify behavior through drugs, transplant organs, prolong life, and make "perfect" babies, today's science raises disturbing ethical questions. [Austin, TX, U.S.A.] [Publication Year: 1985]  

31. Toward a More Natural Science: Biology and Human Affairs
by Kass, Leon R. 
Price: USD 15.00
Dealer: Abebooks, Bookfeathers, LLC
Description: ISBN10: 0029183405, ISBN13: 9780029183403, [publisher: Free Press] Hardcover A heavy item: non-U.S. shipping may require extra fees; please inquire. Not ex-lib. Hardcover in black cloth, in greenish-tan jacket with green and black titles and tree figure, 8vo. xiv + 370pp. Index, endnotes, figures in last chapter. NF/NF. Book has bumped upper front corners; prev. owner's marked over bookplate to front pastedwon. Jacket has shallow creases and softening at bumped upper coenrs and spine ends. Book and jacket are otherwise Fine: clea, tight, square and unmarked. Jacket in Brodart. News article by George F.Will referring to book laid-in in rear. [Lewisburg, PA, U.S.A.] [Publication Year: 1985]  

32. Toward a More Natural Science: Biology and Human Affairs
by Kass, Leon R. 
Price: USD 50.00
Dealer: Abebooks, BooksByLisa
Description: ISBN10: 0029183405, ISBN13: 9780029183403, [publisher: Free Pr] Hardcover First Edition STORED NEW [Highland Park, IL, U.S.A.] [Publication Year: 1985]  

33. Toward a More Natural Science: Biology and Human Affairs
by Kass, Leon R. 
Price: USD 27.95
Dealer: Abebooks, GF Books, Inc.
Description: ISBN10: 0029183405, ISBN13: 9780029183403, [publisher: Free Pr] Hardcover Book is in Used-Good condition. Pages and cover are clean and intact. Used items may not include supplementary materials such as CDs or access codes. May show signs of minor shelf wear and contain limited notes and highlighting. [Hawthorne, CA, U.S.A.] [Publication Year: 1985]  

34. Toward a More Natural Science: Biology and Human Affairs
by Kass, Leon R. 
Price: USD 27.63
Dealer: Abebooks, GoldenWavesOfBooks
Description: ISBN10: 0029183405, ISBN13: 9780029183403, [publisher: Free Pr] Hardcover New. Fast Shipping and good customer service [Fayetteville, TX, U.S.A.] [Publication Year: 1985]  

35. Toward a More Natural Science: Biology and Human Affairs
by Kass, Leon R. 
Price: USD 21.76
Dealer: Abebooks, Irish Booksellers
Description: ISBN10: 0029183405, ISBN13: 9780029183403, [publisher: Free Pr] Hardcover SHIPS FROM USA. Used books have different signs of use and do not include supplemental materials such as CDs, Dvds, Access Codes, charts or any other extra material. All used books might have various degrees of writing, highliting and wear and tear and possibly be an ex-library with the usual stickers and stamps. Dust Jackets are not guaranteed and when still present, they will have various degrees of tear and damage. All images are Stock Photos, not of the actual item. [Portland, ME, U.S.A.] [Publication Year: 1985]  

36. Toward a More Natural Science: Biology and Human Affairs
by Kass, Leon R. 
Price: USD 15.00
Dealer: Abebooks, Kenneth Mallory Bookseller ABAA
Description: ISBN10: 0029183405, ISBN13: 9780029183403, [publisher: Free Press, NY] Hardcover First Edition Hardcover. First Edition. xiv, 359pp+ index. Very good hardback in a jacket that is sunned on the spine. [Decatur, GA, U.S.A.] [Publication Year: 1985]  

37. Toward a More Natural Science: Biology and Human Affairs
by Kass, Leon R. 
Price: USD 15.12
Dealer: Abebooks, Powell's Bookstores Chicago, ABAA
Description: ISBN10: 0029183405, ISBN13: 9780029183403, [publisher: Free Pr] Hardcover 1985. Hardcover. Cloth, no d.j. Some shelf-wear. Else clean copy. Very Good. [Chicago, IL, U.S.A.] [Publication Year: 1985]  

38. Toward a More Natural Science: Biology and Human Affairs
by Kass, Leon R. 
Price: USD 69.00
Dealer: Abebooks, The Book Spot
Description: ISBN10: 0029183405, ISBN13: 9780029183403, [publisher: Free Pr] Hardcover [Sioux Falls, SD, U.S.A.] [Publication Year: 1985]  

39. Toward a More Natural Science: Biology and Human Affairs
by Kass, Leon R. 
Price: USD 7.67
Dealer: Abebooks, ThriftBooks-Dallas
Description: ISBN10: 0029183405, ISBN13: 9780029183403, [publisher: Free Press] Hardcover Missing dust jacket; Pages can have notes/highlighting. Spine may show signs of wear. ~ ThriftBooks: Read More, Spend Less 1.75 [Dallas, TX, U.S.A.] [Publication Year: 1985]  

40. Toward a More Natural Science: Biology and Human Affairs
by Kass, Leon R. 
Price: USD 6.70
Dealer: Abebooks, Wonder Book
Description: ISBN10: 0029183405, ISBN13: 9780029183403, [publisher: Free Pr] Hardcover Very Good condition. Good dust jacket. A copy that may have a few cosmetic defects. May also contain light spine creasing or a few markings such as an owner's name, short gifter's inscription or light stamp. Bundled media such as CDs, DVDs, floppy disks or access codes may not be included. [Frederick, MD, U.S.A.] [Publication Year: 1985]  

41. Toward a More Natural Science: Biology and Human Affairs
by Kass, Leon R. 
Price: USD 133.58
Dealer: AbebooksUK, dsmbooks
Description: ISBN10: 0029183405, ISBN13: 9780029183403, [publisher: Free Pr] Hardcover New [liverpool, United Kingdom] [Publication Year: 1985]  

42. Toward a More Natural Science: Biology and Human Affairs
by Kass, Leon R. 
Price: USD 14.34
Dealer: ZVAB, Kenneth Mallory Bookseller ABAA
Description: ISBN10: 0029183405, ISBN13: 9780029183403, [publisher: Free Press, NY] Hardcover First Edition Hardcover. First Edition. xiv, 359pp+ index. Very good hardback in a jacket that is sunned on the spine. [Decatur, GA, U.S.A.] [Publication Year: 1985]  

43. Toward a More Natural Science: Biology and Human Affairs
by Kass, Leon R. 
Price: USD 14.46
Dealer: ZVAB, Powell's Bookstores Chicago, ABAA
Description: ISBN10: 0029183405, ISBN13: 9780029183403, [publisher: Free Pr] Hardcover 1985. Hardcover. Cloth, no d.j. Some shelf-wear. Else clean copy. Very Good. [Chicago, IL, U.S.A.] [Publication Year: 1985]  

44. Toward a More Natural Science: Biology and Human Affairs
by Kass, Leon R. 
Price: USD 6.41
Dealer: ZVAB, Wonder Book
Description: ISBN10: 0029183405, ISBN13: 9780029183403, [publisher: Free Pr] Hardcover Very Good condition. Good dust jacket. A copy that may have a few cosmetic defects. May also contain light spine creasing or a few markings such as an owner's name, short gifter's inscription or light stamp. Bundled media such as CDs, DVDs, floppy disks or access codes may not be included. [Frederick, MD, U.S.A.] [Publication Year: 1985]