Read, R C <br/><br/>
Combinatorial enumeration of groups graphs and chemical compounds 
R C Read and G Polya 
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 - Springer-Verlag, New York  1987 
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<br/><br/><label>Subjects--Topical Terms: </label><br/>Combinatorial analysis-- Mathematics
<br/><br/><label>Dewey Class. No.: </label>511.6  REA-C