Colloquium on Infinite and Finite sets, Keszthely, Hungary June 25-July 1, 1973 <br/><br/>
Infintte and finite sets; colloquium papers in honour of prof. Paul Erdos for his 60th birthday   
Organized by Hajnal, R. Rado and Vera T. Sos; eds. 
 - Amsterdam  North-Holland  1975 
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<br/><br/><label>Dewey Class. No.: </label>511.5  / C714.IF