Bingham, Robert C. <br/><br/>
Economic concepts :  a programmed approach / 
Robert C. Bingham ; revisited by William Henry Pope 
 - 8th ed. 
 - New York :  McGraw-Hill,  1987 
 - 444 p. :  ill. ;  25 cm. 
<br/><br/><label>ISBN: </label>0070449635 
<br/><br/><label>LCCN: </label>87-3351 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Economics--Programmed instruction