Wykstra, Ronald A. <br/><br/>
Introductory economics / 
Ronald A. Wykstra. 
 - New York :  Harper & Row,  1971 
 - vii, 754 p. :  col. ill. ;  24 cm. 
<br/><br/> Includes index. 
<br/><br/>Includes bibliographical references. 
<br/><br/><label>ISBN: </label>0060472790 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Economics.