Saxena, H.C. . The Calculus of Finite Differences With Numerical Analysis / Textual Documents H.C.Saxena. - 4th ed. / - Delhi : S. Chand & Company , 1971. - 270p. : ill ; 18cm . Subjects--Index Terms: Finite Differences Numerical Analysis G-Mathematics Dewey Class. No.: 517.6 / Sa 97 C