1. Great Unsolved Mysteries of Science
by Lucas, Jerry 
Price: USD 3.98
Dealer: Alibris, ThriftBooks-Atlanta via Alibris
Description: Betterway Publications 1993 Softcover Good Former library book; Pages can have notes/highlighting. Spine may show signs of wear. ~ ThriftBooks: Read More, Spend Less. 

2. Great Unsolved Mysteries of Science/From the End of the Dinosaurs to Interstellar Travel and Life on Other Planets
by Lucas, Jerry 
Price: USD 4.00
Dealer: Alibris, HPB Inc. via Alibris
Description: Betterway Books 1993 paperback Very good Connecting readers with great books since 1972! Used books may not include companion materials, and may have some shelf wear or limited writing. We ship orders daily and Customer Service is our top priority! 

3. Great Unsolved Mysteries of Science/from the End of the Dinosaurs to Interstellar Travel and Life on Other Planets
by Lucas, Jerry 
Price: USD 4.00
Dealer: Abebooks, HPB Inc.
Description: ISBN10: 1558702911, ISBN13: 9781558702912, [publisher: Betterway Books] Softcover Connecting readers with great books since 1972! Used books may not include companion materials, and may have some shelf wear or limited writing. We ship orders daily and Customer Service is our top priority! [Dallas, TX, U.S.A.] [Publication Year: 1993]  

4. Great Unsolved Mysteries of Science
by Lucas Jerry 
Price: USD 6.79
Dealer: Biblio, Victoria Bookshop
Description: Cincinnati, Ohio: Betterway Books,U.S, Date: 1993. First. . Paperback. Very Good. 8vo. A very nice copy. Owners name crossed out to top of title. 1993. Betterway Books,U.S ISBN 1558702911 9781558702912 [GB] 

5. Great Unsolved Mysteries of Science
by Lucas, Jerry 
Price: USD 7.61
Dealer: AbebooksUK, Victoria Bookshop
Description: ISBN10: 1558702911, ISBN13: 9781558702912, [publisher: Betterway Books,U.S, Cincinnati, Ohio] Softcover 8vo. A very nice copy. Owners name crossed out to top of title. [BERE ALSTON, DEVON, United Kingdom] [Publication Year: 1993]  

6. Great Unsolved Mysteries of Science
by Lucas Jerry 
Price: USD 7.98
Dealer: Biblio, ThriftBooks
Description: Betterway Publications, Date: 1993. Paperback. Good. Former library book; Pages can have notes/highlighting. Spine may show signs of wear. ~ ThriftBooks: Read More, Spend Less.Dust jacket quality is not guaranteed. 1993. Betterway Publications ISBN 1558702911 9781558702912 [US] 

7. Great Unsolved Mysteries of Science
by Lucas, Jerry 
Price: USD 7.98
Dealer: Abebooks, ThriftBooks-Atlanta
Description: ISBN10: 1558702911, ISBN13: 9781558702912, [publisher: Betterway Publications] Softcover Former library book; Pages can have notes/highlighting. Spine may show signs of wear. ~ ThriftBooks: Read More, Spend Less 1.01 [AUSTELL, GA, U.S.A.] [Publication Year: 1993]  

8. GREAT UNSOLVED MYSTERIES OF SCIENCE
by Lucas Jerry 
Price: USD 8.31
Dealer: Biblio, Dromanabooks
Description: Cincinnati, Oh, U. S. A.: Betterway Books. Very Good; Gift inscription inside cover, insect damage to bottom corner . front page. Date: 1993. First Edition. Paperback. 1558702911 . Index, notes and bibliography - seven of science's greatest unsolved mysteries. 310gms weight ; 8vo 8" - 9" tall; 190 pages . 1993. Betterway Books ISBN 1558702911 9781558702912 [AU] 

9. GREAT UNSOLVED MYSTERIES OF SCIENCE
by Lucas, Jerry 
Price: USD 8.45
Dealer: AbebooksAU, Dromanabooks
Description: ISBN10: 1558702911, ISBN13: 9781558702912, [publisher: Betterway Books, Cincinnati, Oh, U. S. A.] Softcover First Edition Gift inscription inside cover, insect damage to bottom corner; Index, notes and bibliography - seven of science's greatest unsolved mysteries. 310gms weight ; 8vo 8" - 9" tall; 190 pages [Newstead, VIC, Australia] [Publication Year: 1993]  

10. Great Unsolved Mysteries of Science/from the End of the Dinosaurs to Interstellar Travel and Life on Other Planets
by Jerry Lucas 
Price: USD 10.37
Dealer: Biblio, Ergodebooks
Description: Betterway Books, Date: 1993-04. Paperback. Good. 1993. Betterway Books ISBN 1558702911 9781558702912 [US] 

11. Great Unsolved Mysteries of Science/from the End of the Dinosaurs to Interstellar Travel and Life on Other Planets
by Jerry Lucas 
Price: USD 10.37
Dealer: Abebooks, Ergodebooks
Description: ISBN10: 1558702911, ISBN13: 9781558702912, [publisher: Betterway Books] Softcover [Houston, TX, U.S.A.] [Publication Year: 1993]  

12. Great Unsolved Mysteries of Science
by Lucas Jerry 
Price: USD 11.97
Dealer: Biblio, Fine Print Books
Description: Cincinnati, Ohio, USA; Betterway Books; 1993. paperback in very good condition. 190pp, b/w illusts Cincinnati, Ohio, USA; Betterway Books; 1993 ISBN 1558702911 9781558702912 [AU] 

13. Great Unsolved Mysteries of Science
by Jerry Lucas 
Price: USD 12.16
Dealer: AbebooksAU, The Last Post Bookshop
Description: ISBN10: 1558702911, ISBN13: 9781558702912, [publisher: Cincinnati, Ohio: Betterway Books, 1993] Softcover Paperback. Very Good. Illustrated Cover. 9 " x 6 ". P190, appears unread, this book invites you to explore, and to try to figure out seven of science's greatest unsolved mysteries [Holbrook, NSW, Australia] [Publication Year: 1993]  

14. Great Unsolved Mysteries of Science
by Lucas, Jerry 
Price: USD 12.16
Dealer: AbebooksAU, Fine Print Books (ABA)
Description: ISBN10: 1558702911, ISBN13: 9781558702912, [publisher: Cincinnati, Ohio, USA; Betterway Books; 1993] Softcover paperback in very good condition; 190pp, b/w illusts [Erskineville, Sydney, NSW, Australia] [Publication Year: 1993]  

15. Great Unsolved Mysteries of Science
Price: USD 12.54
Dealer: ZVAB, AwesomeBooks
Description: ISBN10: 1558702911, ISBN13: 9781558702912, [publisher: -] Softcover Great Unsolved Mysteries of Science This book is in very good condition and will be shipped within 24 hours of ordering. The cover may have some limited signs of wear but the pages are clean, intact and the spine remains undamaged. This book has clearly been well maintained and looked after thus far. Money back guarantee if you are not satisfied. See all our books here, order more than 1 book and get discounted shipping. [Wallingford, United Kingdom] [Publication Year: 1993]  

16. Great Unsolved Mysteries of Science
Price: USD 13.44
Dealer: AbebooksUK, Bahamut Media
Description: ISBN10: 1558702911, ISBN13: 9781558702912, [publisher: - -] Softcover This book is in very good condition and will be shipped within 24 hours of ordering. The cover may have some limited signs of wear but the pages are clean, intact and the spine remains undamaged. This book has clearly been well maintained and looked after thus far. Money back guarantee if you are not satisfied. See all our books here, order more than 1 book and get discounted shipping. [Reading, United Kingdom] [Publication Year: 1993]  

17. Great Unsolved Mysteries of Science
Price: USD 13.44
Dealer: AbebooksUK, AwesomeBooks
Description: ISBN10: 1558702911, ISBN13: 9781558702912, [publisher: -] Softcover Great Unsolved Mysteries of Science This book is in very good condition and will be shipped within 24 hours of ordering. The cover may have some limited signs of wear but the pages are clean, intact and the spine remains undamaged. This book has clearly been well maintained and looked after thus far. Money back guarantee if you are not satisfied. See all our books here, order more than 1 book and get discounted shipping. [Wallingford, United Kingdom] [Publication Year: 1993]  

18. Great Unsolved Mysteries of Science
by Lucas, Jerry 
Price: USD 15.88
Dealer: Alibris, Victoria Bookshop via Alibris
Description: Cincinnati, Ohio Betterway Books, U. S 1993 First. Paperback Very Good 8vo. A very nice copy. Owners name crossed out to top of title. 

19. Great Unsolved Mysteries of Science
by Lucas, Jerry 
Price: USD 17.19
Dealer: Alibris, dromanabooks via Alibris
Description: Cincinnati, Oh, U. S. A. Betterway Books 1993 First Edition Paperback Very Good; Gift inscription inside cover, insect damage to bottom corner front page 1558702911. Index, notes and bibliography-seven of science's greatest unsolved mysteries. 310gms weight; 8vo 8"-9" tall; 190 pages. 

20. Great Unsolved Mysteries of Science/from the End of the Dinosaurs to Interstellar Travel and Life on Other Planets
by Lucas, Jerry 
Price: USD 69.00
Dealer: Abebooks, The Book Spot
Description: ISBN10: 1558702911, ISBN13: 9781558702912, [publisher: Betterway Books] Softcover [Sioux Falls, SD, U.S.A.] [Publication Year: 1993]