Hoffmann, Laurence D.,  1943- <br/><br/>
Calculus for business, economics, and the social and life sciences. 
Laurence D. Hoffmann, Gerald L. Bradley. 
 - Fifth  Laurence D. Hoffmann, Gerald L. Bradley. 
 - New York :  McGraw-Hill,  c1992. 
 - xiv, 778 p. :  ill. (some col.) ;  25 cm.