TY  - BOOK
AU  - Foerster, Paul A.
TI  - Precalculus with trigonometry: concepts and applications 
SN  - 1559533919
U1  - 516.24 22
PY  - 2003///
CY  - Emeryville, CA
PB  - Key Curriculum Press
KW  - Trigonometry.;Functions.;Precalculus
ER  -