Robertson, Dennis, <br/><br/>
Lectures on economic principles 
by Dennis Robertson 
 - 3rd. 
 - London:  The fontana library,966. 
 - 480p:9cm. 
<br/><br/><label>Subjects--Index Terms: </label>Economics Economics principles 
<br/><br/><label>Dewey Class. No.: </label>330.01