51. The Longest Cave
by Roger W. Brucker 
Price: USD 38.63
Dealer: AbebooksUK, Pieuler Store
Description: ISBN10: 0809313227, ISBN13: 9780809313228, [publisher: Southern Illinois University Press] Softcover Book is in NEW condition. Satisfaction Guaranteed! Fast Customer Service!! [Suffolk, United Kingdom] [Publication Year: 1987]  

52. The Longest Cave
by Roger W. Brucker/ Richard A. Watson 
Price: USD 40.23
Dealer: Biblio, Revaluation Books
Description: Southern Illinois Univ Pr, Date: 1987. Paperback. New. 352 pages. 9.50x6.25x1.00 inches. 1987. Southern Illinois Univ Pr ISBN 0809313227 9780809313228 [GB] 

53. The Longest Cave by Brucker, Roger W., Watson Ph.D., Professor Richard A., Brucker, Roger W. [Paperback ]
by Brucker, Roger W. , Watson Ph.D., Professor Richard A. , Brucker, Roger W.  
Price: USD 40.65
Dealer: Abebooks, booksXpress
Description: ISBN10: 0809313227, ISBN13: 9780809313228, [publisher: Southern Illinois University Press] Softcover [Bayonne, NJ, U.S.A.] [Publication Year: 1987]  

54. The Longest Cave
by Roger W. Brucker/ Richard A. Watson 
Price: USD 40.83
Dealer: AbebooksUK, Revaluation Books
Description: ISBN10: 0809313227, ISBN13: 9780809313228, [publisher: Southern Illinois Univ Pr] Softcover 352 pages. 9.50x6.25x1.00 inches. In Stock. [Exeter, United Kingdom] [Publication Year: 1987]  

55. The Longest Cave
by Roger W. Brucker 
Price: USD 43.70
Dealer: Alibris, Books2anywhere via Alibris
Description: Southern Illinois University Press 2/28/1987 12: 00: 00 AM Softcover PLEASE NOTE, WE DO NOT SHIP TO DENMARK. New Book. Shipped from UK in 4 to 14 days. Established seller since 2000. Please note we cannot offer an expedited shipping service from the UK. 

56. The Longest Cave
by Roger W. Brucker 
Price: USD 45.80
Dealer: Alibris, Paperbackshop International via Alibris
Description: Southern Illinois University Press 2/28/1987 12: 00: 00 AM Softcover PLEASE NOTE, WE DO NOT SHIP TO DENMARK. New Book. Shipped from UK in 4 to 14 days. Established seller since 2000. Please note we cannot offer an expedited shipping service from the UK. 

57. The Longest Cave
by Brucker, Roger W.; Watson Ph.D., Professor Richard A. 
Price: USD 47.16
Dealer: Abebooks, GF Books, Inc.
Description: ISBN10: 0809313227, ISBN13: 9780809313228, [publisher: Southern Illinois University Press] Softcover Book is in NEW condition. [Hawthorne, CA, U.S.A.] [Publication Year: 1987]  

58. The Longest Cave
by Roger W. Brucker/ Richard A. Watson 
Price: USD 51.79
Dealer: Alibris, Revaluation Books via Alibris
Description: Southern Illinois Univ Pr 1987 Softcover New 352 pages. 9.50x6.25x1.00 inches. 

59. The Longest Cave
by Brucker, Roger W.; Watson Ph.D., Professor Richard A.; Brucker, Roger W. 
Price: USD 59.98
Dealer: Alibris, GridFreed via Alibris
Description: Southern Illinois University Press 1987-02-16 Paperback New Size: 9x5x1; New. In shrink wrap. Looks like an interesting title! 

60. THE LONGEST CAVE
by Brucker, Roger W.; Watson Ph.D., Professor Richard A. 
Price: USD 59.98
Dealer: Abebooks, BennettBooksLtd
Description: ISBN10: 0809313227, ISBN13: 9780809313228, [publisher: Southern Illinois University Press] Softcover New. In shrink wrap. Looks like an interesting title! 1.36 [North Las Vegas, NV, U.S.A.] [Publication Year: 1987]  

61. The Longest Cave
by Brucker Roger W.; Watson PhD. Professor Richard A.; Brucker Roger W h. D. 
Price: USD 62.98
Dealer: Biblio, GridFreed LLC
Description: Southern Illinois University Press, Date: 1987-02-16. Paperback. New. New. In shrink wrap. Looks like an interesting title! 1987. Southern Illinois University Press ISBN 0809313227 9780809313228 [US] 

62. The Longest Cave
by Brucker, Roger W. 
Price: USD 79.80
Dealer: Abebooks, Hafa Adai Books
Description: ISBN10: 0809313227, ISBN13: 9780809313228, [publisher: Southern Illinois University Press] Softcover [Moncks Corner, SC, U.S.A.] [Publication Year: 1987]