Porter, Harold William, 1907- Machine shop operations and setups / by Harold W. Porter. Orville D. Lascoe [and] Clyde A. Nelson. - 3d ed. - London : Technical press., 1967. - x, 517 p. : illus. (part col.) ; 24 cm. Includes index. Subjects--Topical Terms: Machine shops--Management.Machine-shop practice. Dewey Class. No.: 621.9 / POM 1967