Kar, J.M. . Key to Analytical Geometry of the Conic Sections / Textual Documents J.M.Kar. - 2nd ed. / - Calcutta : The Globe Library , Nd. - 404p. : ill ; 19cm . Subjects--Index Terms: Analytical Geometry Conic Sections G-Mathematics Dewey Class. No.: 516.22 / K 143 An