Henderson, J. Vernon. <br/><br/>
Principles of economics / 
J. Vernon Henderson, William Poole. 
 - Lexington, Mass. :  D.C. Heath,  c1991. 
 - 1 v. (various pagings) :  ill. (some col.) ;  27 cm. 
<br/><br/>Includes bibliographical references and index. 
<br/><br/><label>ISBN: </label>0669201731 
<br/><br/><label>LCCN: </label>90084759 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Economics.
<br/><br/><label>LC Class. No.: </label>HB 171.5  / .H4