Ryser, Herbert John. <br/><br/>
Combinatorial mathematics / 
by Herbert John Ryser. 
 - [America] :  Mathematical Association of America,  c1963. 
 - xiv, 154 p. : ill. 
 - The Carus mathematical monographs ; no. 14 .
<br/><br/><label>Subjects--Topical Terms: </label><br/>Combinatorial analysis.