Roberts, J. H. Angle modulation : the theory of system assessment / - London Peter Peregrinus 1977 - xv, 278 p. : ill. ; 23 cm. - IEE telecommunications series ; 5 . 1 1 1 ISBN: 0-901223-95-6 Source: 84-734 Subjects--Topical Terms: Angle modulation. LC Class. No.: / .5.R52 1977