BOYES,WILLIAM. <br/><br/>
ECONOMICS. 
BOYES WILLIAM AND MELVIN MICHAEL, 
 - 6TH EDITION 
 - BOSTON  HOUGHTON MIFFLIN COMPANY  2005. 
<br/><br/><label>ISBN: </label>0618372520 
<br/><br/><label>LC Class. No.: </label>330.974 7 BOY 
<br/><br/><label>Dewey Class. No.: </label>330..974 7 BOY