Polish Academy of Science, Institute of Mathematics <br/><br/>
Combinatorics and graph theory; proceedings of the 30th semester held at the Stefan Banach International Mathematical Cetre Warsaw, Sept. 15-Dec. 17, 1987  / 

 - Borewieki:  Werszawa,  1989 
 - 251p. 
 - Banach Centre Publications ; v. 25 .
<br/><br/><label>Dewey Class. No.: </label>511.6  / P768.CG