Ruffin, Roy, <br/><br/>
Principles of microeconomics / 
Roy J. Ruffin and Paul R. Gregory. 
 - 5th ed. 
 - New York, NY :  HarperCollins College Publishers,  1993. 
 - xxx, 491 p. :  ill. ;  26 cm. 
<br/><br/>Includes bibliographical references and indexes. 
<br/><br/><label>ISBN: </label>0673465845   $28.00 
<br/><br/><label>LCCN: </label>92023590  
<br/><br/><label>Subjects--Topical Terms: </label><br/>Microeconomics.
<br/><br/><label>LC Class. No.: </label>HB172  / .R75 1993 
<br/><br/><label>Dewey Class. No.: </label>338.5  / GRP