Ludwig, Oswald A.
Metalwork : technology and practice / Oswald A. Ludwig ; rev. by Willard J. McCarthy. - [5th ed.] - Bloomington, Ill. : McKnight & McKnight, c1969. - xiv, 630 p. : ill.
Machine-shop practice.
Metal-work
Metalwork : technology and practice / Oswald A. Ludwig ; rev. by Willard J. McCarthy. - [5th ed.] - Bloomington, Ill. : McKnight & McKnight, c1969. - xiv, 630 p. : ill.
Machine-shop practice.
Metal-work