Ruffin, Roy, <br/><br/>
Principles of macroeconomics / 
Roy J. Ruffin, Paul R. Gregory. 
 - 4th ed. 
 - Glenview, Ill. :  Scott, Foresman/Little, Brown Higher Education,  1990. 
 - 464 p. :  ill. ;  26 cm. 
<br/><br/>Includes bibliographical references and indexes. 
<br/><br/><label>ISBN: </label>0673460215 
<br/><br/><label>LCCN: </label>89036668  
<br/><br/><label>Subjects--Topical Terms: </label><br/>Macroeconomics.
<br/><br/><label>Dewey Class. No.: </label>338.5  / GRP