TY  - BOOK
AU  - Barnett,Raymond A.
AU  - Ziegler,Michael R.
AU  - Byleen,Karl E.
TI  - Precalculus: functions and graphs 
SN  - 0072368713
PY  - 2001///
CY  - Boston, MA
PB  - McGraw-Hill
KW  - Functions
KW  - Algebra
KW  - Graphic methods
N1  - Includes index
ER  -