Main, Robert S. <br/><br/>
Elements of microeconomics / 
Robert S. Main, Charles W. Baird. 
 - 2nd ed. 
 - St. Paul :  West Publishing,  c1981. 
 - xviii, 389 p. :  ill. ;  25 cm. 
<br/><br/> Includes index. 
<br/><br/>Includes bibliographical references. 
<br/><br/><label>ISBN: </label>0829903917 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Microeconomics.