Pfouts, Ralph William,  1920- <br/><br/>
Elementary economics :  a mathematical approach / 
Ralph W. Pfouts 
 - New York :  John Wiley & Sons,  1972 
 - 335 p. :  ill. ;  23 cm. 
<br/><br/><label>ISBN: </label>0471684805 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Economics, Mathematical