TY  - BOOK
AU  - Swokowski,Earl William
TI  - Precalculus: functions and graphs 
SN  - 0871500604
U1  - 512.13 23
PY  - 1987///
CY  - Boston
PB  - Prindle, Weber & Schmidt
KW  - Trigonometry
KW  - Algebra
KW  - Graphic methods
KW  - Functions
N1  - Includes index
ER  -