51. Classical Introduction to Modern Number Theory
by Ireland, Kenneth F.; Rosen, M. 
Price: USD 86.91
Dealer: Abebooks, GreatBookPrices
Description: ISBN10: 038797329X, ISBN13: 9780387973296, [publisher: Springer] Hardcover [Columbia, MD, U.S.A.] [Publication Year: 1990]  

52. Classical Introduction to Modern Number Theory
by Ireland, Kenneth F.; Rosen, M. 
Price: USD 89.29
Dealer: AbebooksUK, GreatBookPricesUK
Description: ISBN10: 038797329X, ISBN13: 9780387973296, [publisher: Springer] Hardcover [Castle Donington, DERBY, United Kingdom] [Publication Year: 1990]