Bingham, Robert C. <br/><br/>
Economic concepts  a programmed approach 
Robert C. Bingham 
 - 6th ed 
 - New York :  McGraw-Hill,  c1981. 
 - xii, 377 p.  ill.  26 cm 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Economics--Programmed instruction
<br/><br/><label>Dewey Class. No.: </label>330  / .07  / 7