Black, Harold S, ( 1898- ). Modulation theory. - New York, Van Nostrand, 1953. - 363 p. illus. 24 cm. - Bell Telephone Laboratories series . LCCN: 53010091 Subjects--Topical Terms: MODULACIÓN ,TEORÍATELECOMUNICACIONES Dewey Class. No.: 621.384152 621.3845*