Metal Work :
Ludwig, Oswald A.
Metal Work : technology and practice / Oswald A. Ludwig. - 4th ed. Rev. by Earl A. Ludwig. - Bloomington, Ill. : McKnight & McKnight Pub. Co., c1962. - 488 p. : ill. ; 27 cm.
Includes bibliographical references and index.
Machine-shop practice.
Metal-work.
621.75 / LUD
Metal Work : technology and practice / Oswald A. Ludwig. - 4th ed. Rev. by Earl A. Ludwig. - Bloomington, Ill. : McKnight & McKnight Pub. Co., c1962. - 488 p. : ill. ; 27 cm.
Includes bibliographical references and index.
Machine-shop practice.
Metal-work.
621.75 / LUD