Douce, J. L. An introduction to the mathematics of servomechanisms / J. L.Douce - 1st. ed. - London : English Language Book Soc. , 1971 - x, 240 p. ill.; - Applied mathematics series . Bibliography: p.[233]-236. 7 Index. Subjects--Topical Terms: Machine Engineering Dewey Class. No.: 621.8 / DOI 1971