00476nam a22001697a 4500003000600000005001700006008004100023040001400064082001700078100002500095245004500120260004200165300003900207500001800246650001900264650002300283GCWUF20181210013540.0181210b xxu||||| |||| 00| 0 eng d bENGcMAIN a516.152bSOM a Sommerville, D.M.Y. a Analytical conicsc Sommerville, D.M.Y. aLondon : b G. Bell and Sons, c1924. aviii,310 p. :bill ;c25 cm.fH.B. aInclude Index aConic sections aGeometry, Analytic