TY  - BOOK
AU  - Dugopolski,Mark
TI  - Precalculus: functions & graphs 
SN  - 9780321789433
PY  - 2013///
CY  - Boston
PB  - Pearson
KW  - Precalculus
KW  - Textbooks
KW  - Graphic methods
KW  - Functions
N1  - Includes indexes
ER  -