Barron, Charles H. Numerical control for machine tools / [by] Charles H. Barron. - New York : McGraw-Hill, [1971] - x, 245 p : ill. ; 21 cm. + hbk. Bibliography: p. 237-239. ISBN: 0070038244 LCCN: 73150456 Subjects--Topical Terms: Machine-tools--Numerical control Dewey Class. No.: 621.902