TY  - GEN
AU  - HOFFMANN, L. D.
AU  - BRADLEY, G. L.
TI  - Calculus: For Business, Economics, and the Social and Life Sciences
SN  - 978-0-07-305191-8
U1  - 515 HOF 
PY  - 2007///
CY  - New York
PB  - Mcgraw- Hill  ,Inc
ER  -