Ruffin, Roy j. <br/><br/>
Principles of macroeconomics / 
Paul R Gregory. 
 - 2nd ed. 
 - Glenview, Illinois :  Scott, Foresman,  c1986. 
 - xiii,399 p. :  ill. 
<br/><br/> Includes index. 
<br/><br/><label>ISBN: </label>0673182266 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Economics.
<br/><br/><label>LC Class. No.: </label>HB171.5  / .R84