TY  - BOOK
AU  - Posamentier,Alfred S.
AU  - Salkind, Charles.
TI  - Challenging problems in algebra
SN  - 0 486 69148 9
AV  - QA157.P68 
PY  - 1970///
CY  - New York PublisherYear of publication	
PB  -  : inc Dover publications
KW  - Algebra
KW  -  Problems
KW  - Exercises
ER  -