Principles of microeconomics :  readings, issues and cases / 
edited by Edwin Mansfield. 
 - 2-nd ed 
 - New York :  Norton,  c1977. 
 - ix, 276 p. :  ill. ;  23 cm. 
<br/><br/><label>ISBN: </label>0-393-09108-2 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Microeconomics