Ruffin, Roy J. <br/><br/>
Principles of macroeconomics / 
Roy J. Ruffin 
 - Illinois :  Scott, Foresman,  1983 
 - 416 p :  ill 
<br/><br/><label>ISBN: </label>067315856x 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Economics.
<br/><br/><label>LC Class. No.: </label>HB171.5  / R82 P6 1983