Butler, R. 1923- An introduction to numerical methods / by R. Butler and E. Kerr. - New York, Pitman Pub. Corp. [1962] - x, 386 p. ; ill., 23 cm. "1st pub. 1962" Includes bibliography. LCCN: 62016122 Subjects--Topical Terms: Numerical calculations. LC Class. No.: QA297 / .B85 1962 Dewey Class. No.: 512.8