TY  - BOOK
AU  - Drooyan,Irving
AU  - Fleming,Frank
AU  - Hadel,Walter
TI  - Algebra elemental / Irving Drooyan ; Walter Hadel ; Frank Fleming
U1  - 512/D837a 
PY  - 1976///
CY  - México, México 
PB  - Limusa
KW  - ALGEBRA
ER  -