Beath, John <br/><br/>
The economic theory of product differentiation  / 

 - Cambridge:  Cambridge University Press,  1991 
 - ix, 204p. Bibl. Index. 
<br/><br/><label>ISBN: </label>0521335523 
<br/><br/><label>Dewey Class. No.: </label>338.5  / B369.ET