LAWLER, E <br/><br/>
CAMBINATORIAL OPTIMIZATION:NET WORKS AND MATROIDS 

 - NEW YORK  DOVER  2001 
 - x+374p., 22X13Cms 
<br/><br/><label>ISBN: </label>0486414531 
<br/><br/><label>Dewey Class. No.: </label>511.6 L418