Crapo, Henry H <br/><br/>
On the foundations of combinatorial theory: Combinatorial geometries 
Henry H Crapo and Gian-Carlo Rota 
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 - MIT Press, Cambridge  1976 
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<br/><br/><label>Subjects--Topical Terms: </label><br/>Combinatorial geometry
<br/><br/><label>Dewey Class. No.: </label>516.13  CRA-O