Wels, D. J. A. <br/><br/>
Combinatorial mathematics and its applications  : porceedings of a conference... 

 - New York :  Academic Press,  1971 
 - 363 p. 
<br/><br/><label>LCCN: </label>53423 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Analisis combinatorio.
<br/><br/><label>Dewey Class. No.: </label>511.6  / W4