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

 - 4 
 - London  Scott, Foresman  1990 
 - xxxii, (851+i-25)p.;  
<br/><br/> Includes index 
<br/><br/><label>ISBN: </label>673460207 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Economics