Mason, Robert D. <br/><br/>
Programmed Learning Aid for Business And Consumer Mathematics /  
Robert D. Mason, Walter H. Lange and Temoleon G.Rousos ; edited by Roger H. Hermanson. 
 - America :   Learning system co.,   c 1978. 
 - xii, 142p. :   ill. ;   26 cm. 
 - Irwin PLAID series. .
<br/><br/> Includes Index. 
<br/><br/>132  132 
<br/><br/><label>ISBN: </label>0-256-01272-5 
<br/><br/><label>Subjects--Topical Terms: </label><br/> Affaires -- Comptabilite -- Consommation -- Mathematiques
<br/><br/><label>Dewey Class. No.: </label>650 / M381b