Ruffin, Roy J. <br/><br/>
Principles of microeconomics/ 
Roy J. Ruffin 
 - Illinois:  Scott, Foresman and Co.,  1982 
 - xxxi, 464p.:  ill.;  28 cm. 
<br/><br/>Includes bibliographical references and index. 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Economics<br/>Microeconomics
<br/><br/><label>Dewey Class. No.: </label>330  / RUF