Croft, Hallard T, et al. <br/><br/>
Unsolved problems in geometry 
Hallard T Croft et al. 
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 - Springer-Verlag, New York  1991 
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 - .
<br/><br/><label>Subjects--Topical Terms: </label><br/>Geometry-- Mathematics
<br/><br/><label>Dewey Class. No.: </label>R  516  CRO-U