Ruffin, Roy <br/><br/>
Principles of economics 

 - 4th 
 - London:  Foresman and Co.  1990. 
 -  xxxii,851p 
<br/><br/> includes index 
<br/><br/><br/>eng 
<br/><br/><label>ISBN: </label>0673460207 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Economics
<br/><br/><label>Dewey Class. No.: </label>330  / RUP