HERSTEIN, I. N. <br/><br/>
Tropics in Algebra 

 - 2nd Ed. 
 - New Delhi.  Wiley Eastern Ltd.  1991 
 - xi, 388p. 
<br/><br/><label>ISBN: </label>0 85226 354 6 
<br/><br/><label>Dewey Class. No.: </label>512