Ruffin, Roy,  1938- <br/><br/>
Principles of microeconomics / 
Roy J. Ruffin, Paul R. Gregory. 
 - 6th ed. 
 - Reading, Mass. :  Addison-Wesley,  c1997 
 - 402 p. :  col. ill. ;  26 cm. 
 - The Addison-Wesley series in economics .
<br/><br/><label>ISBN: </label>0673994937 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Microeconomics.
<br/><br/><label>Subjects--Index Terms: </label>Kinh tế học Kinh tế học vi mô 
<br/><br/><label>Dewey Class. No.: </label>338.5