51. A FIELD GUIDE TO REPTILES AND AMPHIBIANS: Of Eastern and Central North America
by Conant, Roger 
Price: USD 12.00
Dealer: Abebooks, Russ States
Description: ISBN10: 0395199778, ISBN13: 9780395199770, [publisher: Houghton Mifflin Co., Boston] Softcover (1975), 429pp, illus., maps, 'The Peterson Field Guide Series, No. 12', light spotting to cover, some foxing to pg edges, contents clean & unmarked. [Oil City, PA, U.S.A.] [Publication Year: 1975]  

52. Conant FG to Reptiles 2nd Pa
by Conant, Robert; Conant, Roger; Peterson, Roger Tory 
Price: USD 6.98
Dealer: Abebooks, ThriftBooks-Atlanta
Description: ISBN10: 0395199778, ISBN13: 9780395199770, [publisher: Houghton Mifflin] Softcover Former library book; Readable copy. Pages may have considerable notes/highlighting. ~ ThriftBooks: Read More, Spend Less 1.1 [AUSTELL, GA, U.S.A.]  

53. Conant Fg to Reptiles 2nd Pa
by Conant, Robert; Conant, Roger; Peterson, Roger Tory 
Price: USD 2.98
Dealer: Alibris, ThriftBooks-Reno via Alibris
Description: Houghton Mifflin 1975 2nd 1993. Corr. 2nd Printing ed. Softcover Fair Former library book; Readable copy. Pages may have considerable notes/highlighting. ~ ThriftBooks: Read More, Spend Less. 

54. Field Guide to Reptiles and Amphibians of Eastern and Central North America A
by Conant Roger 
Price: USD 6.99
Dealer: Biblio, Blue Awning Books
Description: Boston: Houghton Mifflin, Date: 1975. 3d ptg.. Paperback. Book: Very Good. 12mo.. Conant, Isabelle Hu. 429 pp. 4 1/2 x 7 1/4. Light blue vinyl wraps. No damage or markings noted. 1975. Houghton Mifflin ISBN 0395199778 9780395199770 [US] 

55. Field Guide to Reptiles and Amphibians of Eastern and Central North America, A
by Conant, Roger 
Price: USD 6.99
Dealer: Abebooks, Blue Awning Books
Description: ISBN10: 0395199778, ISBN13: 9780395199770, [publisher: Houghton Mifflin, Boston] Softcover 429 pp. 4 1/2 x 7 1/4. Light blue vinyl wraps. No damage or markings noted. [Salt Lake City, UT, U.S.A.] [Publication Year: 1975]