The economic problem/ 
Robert L. Hellbroner. 
 - 4th ed. 
 - Englewood:  New Jersey,   1975.  
 - viii, 383 p. :  
<br/><br/><label>ISBN: </label>132269449 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Economy 
<br/><br/><label>LC Class. No.: </label>HB 171.5 .H39 1975