TY  - GEN
AU  - Demana, Franklin
AU  - Clemens, Stanley R.
AU  - Waits, Bert K.
TI  - Precalculus: functions  and graphs
SN  - 0201567318
U1  - 512.13 
PY  - 1993///
CY  - New York
PB  - Addison-wesley Publishing Company
KW  - Trigonometry
KW  - Algebra
ER  -