Kolman, Bernard, 1932- Elementary multivariable calculus/ [by] Bernard Kolman and William F. Trench. - New York: Academic Press, [1971]. - vii, 505 p.: illus., 25 cm. ISBN: 0124178502 LCCN: 73156267 Subjects--Topical Terms: Calculus. Dewey Class. No.: 515