Camina, Alan <br/><br/>
Introduction to enumeration 
Alan Camina and Lewis 
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 - Springer-Verlag, London  2011 
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 - Springer Undergraduate Mathematics Series .
<br/><br/><label>Subjects--Topical Terms: </label><br/>Combinatorial analysis-- Mathematics
<br/><br/><label>Dewey Class. No.: </label>511.6  CAM-I