Ruffin, Roy J.,  1938- <br/><br/>
Principles of macroeconomics  [Book /] 
Roy J. Ruffin, Paul R. Gregory. 
 - 5th ed. 
 - New York, N.Y. :  HarperCollins College Publishers,  1993. 
 - xxxi, 470, [23] p. :  col. ill. ;  26 cm. 
<br/><br/>Includes bibliographical references and indexes. 
<br/><br/> All Ages. 
<br/><br/><label>ISBN: </label>067346587X : 
<br/><br/><label>LCCN: </label>92023591  
<br/><br/><label>Subjects--Topical Terms: </label><br/>Macroeconomics.
<br/><br/><label>LC Class. No.: </label>HB172.5  / .R84 1993 
<br/><br/><label>Dewey Class. No.: </label>339 
<br/><br/><label>National Library of Medicine Call No.: </label> / AR