Niven, Ivan Morton, 1915- Calculus : an introductory approach / by Ivan Niven. - 2d ed. - Princeton, N.J. : Van Nostrand , [1966] - viii, 202 p. : ill. ; 24 cm. - The University series in undergraduate mathematics . LCCN: 66-006747 Subjects--Topical Terms: Calculus. Dewey Class. No.: 515