00811cam a22002651 4500 6011942 BD-DhUL 20150115091505.0 791217s1947 enka 000 0 eng 48014358 (OCoLC)5804711 DLC PPiC DLC BD-DhUL premarc 621.384 TIF Tibbs, Christopher E Frequency modulation engineering / foreword by Leslie H. Bedford. London, Chapman and Hall, 1947. x, 310 p. ill., diagrs. 22 cm. Includes bibliographies. Radio frequency modulation. Radio Equipment and supplies. Johnstone, G. G., joint author. 7 cbc oclcrpl u ncip 19 y-gencatlg ddc BK 31302 31302 0 0 ddc 0 621_384000000000000_TIF 0 NFIC 59094 DUSL DUSL GEN 2053-04-18 621.384 TIF 59921 2015-01-15 2015-01-15 BK