Mason, Robert D. <br/><br/>
Mathematics for business and consumers 
Robert Mason, Walter Lange, Temoleon Rouses 
 - 3rd edition 
 - Plano Texas  Business Publication Incorporated  c1984 
 - XV, 516 pages  illustrations  28 cm. 
<br/><br/> Includes index 
<br/><br/><label>ISBN: </label>0256030715