New methods for sheet metal work : a practical working text-book for apprentices, sheet metal workers, platers and draughtsmen engaged in engineering, aircraft, shipbuilding and other industries / by W. Cookson. Cookson, William. Sheet-metal work. Sheet-metal work Patternmaking. TS250 .C6 1944 624.182 CON Includes bibliographical references and index. London : Technical Press, 1944. 1944. 1944 Text 207 p. : eng