Vasishtha, A. R. Calculus of finite differences and numerical analysis : Course on numerical methods / A. R. Vasishtha; Vipin Vasishtha - 4th ed. - New Delhi : Kedar Nath Ram Nath, 1997. - viii, 436 p. : ill. ; 20 cm. Subjects--Topical Terms: Differential calculusNumerical analysis. Dewey Class. No.: 515.62/ V334c