TY  - BOOK
AU  - Barnett,Raymond A.
AU  - Ziegler,Michael R.
AU  - Byleen,Karl E.
TI  - Precalculus: a graphing approach 
SN  - 0070057176
PY  - 2000///
CY  - Boston
PB  - McGraw-Hill
KW  - Functions
KW  - Algebra-Graphic methods
N1  - Includes index
ER  -