Rosenberg, R. Robert,  1900- <br/><br/>
Business mathematics / 
R. Robert Rosenberg and Harry Lewis 
 - 6th ed. 
 - New York :  Gregg Pub. Division,  c1963 
 - xiv, 562 p. :  chart, ill. ;  23 cm. 
<br/><br/> Includes index 
<br/><br/><label>ISBN: </label> USD 4.96 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Business mathematics
<br/><br/><label>Dewey Class. No.: </label>511.8