1 AMPLIFIER builder’s guide Amplifier Builder’s Guide / Editors of Radio Craft. -Third printing-October 1947 New York : RADCRAFT Publications, 1947. - 621.38 AMPLI bui
2 HYLANDER, Clarence John An Introducion to Television / C. J. Hylander and Robert Harding. - New York : The Macmillan Company, 1941. - 62 HYLAN atv