Askwith, E. H. 1864- The analytical geometry of the conic sections / by E. H. Askwith - 3rd ed. - London : Adam and Charles Black, 1957 - xii, 443 p. : ill. ; 22 cm. ISBN: ? 2.25 Subjects--Topical Terms: Geometry, Analytic--PlaneMathematicsEquations Dewey Class. No.: 516.2