TY  - BOOK
AU  - Zimmer, Rudolf A.
TI  - Pre-calculus for technical programs(part 1): A student  oriented teaching or self -study text
SN  - 0969744692
AV  - QA 39.2.Z56 1997 
PY  - 1997///
CY  - London
PB  - BC  publishing company
ER  -