TY  - BOOK
AU  - Rich,Barnett
TI  - Schaum´s principles and problems of elementary algebra: [including 2700 solved problems, 3300 supplementary problems] 
T2  - Compendios Schaum
U1  - 512.0076 
PY  - 1960///?]
CY  - New York, NY.
PB  - Schaum
KW  - Álgebra
KW  - Problemas, ejercicios, etc
ER  -