Billington, Elizabeth J.. <br/><br/>
Combinatorial Mathematics IX /  

 - 1st ed /  
 - Berlin-33 :   Springer-Verlag ,   1980 
 - p.443,xi :  
<br/><br/><label>ISBN: </label>3-540-11601-X 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Mathematics
<br/><br/><label>Dewey Class. No.: </label>B217p8,N81  / M2