Reintjes, J.Francis. Numerical control: making a new technology / J. Francis Reintjes. - New York: Oxford University Press, 1991. - xvi, 223 p.: ill. ; 25 cm. - Oxford series on advanced manufacturing 9. . Includes bibliographical references:(p.188-191)and index. ISBN: 019506772X Subjects--Topical Terms: Machine--tools--Numerical control--History