Martin, S. J. Numerical control of machine tools / S. J. Martin. - London : Hodder and Stoughton, 1970. - [x], 302 p. : ill. - ELBS low-priced edition . Second copy is ELBS ed., 1973. ISBN: 0340183748 (ELBS) LCCN: 92043003 Subjects--Topical Terms: Machine-tools--Numerical control.