Mansfield, E. <br/><br/>
Micro-economics:theory and applications 

 - ,aLondon  W. W. Norton and Company  1985 
 - p. 446 
<br/><br/><label>Subjects--Index Terms: </label>Economics;Microeconoonics;Marketing 
<br/><br/><label>Dewey Class. No.: </label>338.5