Waterloo Conference on Combinatorics, University of Waterloo, 1968 <br/><br/>
Recent progress in combinatorics - proceedings   
ed. by T.W.Tutte 
 - New York  Academic Press  1969 
 - xiv, 347p. 
<br/><br/><label>ISBN: </label>127051503 
<br/><br/><label>LCCN: </label>69-18337 
<br/><br/><label>Dewey Class. No.: </label>511.606  / N69