Hegarty, J. <br/><br/>
Calculus for the management and social sciences  

 - Allyn & bacon, INC  Boston  1980 
 - 496p.  fig. 
<br/><br/><label>Nat. Bib. No.: </label>5375 
<br/><br/><label>Universal Decimal Class. No.: </label>517.1  / HEG