Hannaford, John. <br/><br/>
A programmed guide to the economics problem / 
John Hannaford, Robert L. Heilbroner. 
 - 3rd ed. 
 - Englewood Cliffs, N.J. :  Prentice-Hall,  1972. 
 - 231 p. :  ill, ;  24 cm. 
<br/><br/><label>ISBN: </label>0132269287 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Economics.