Tele-communication engineers' instrument manual / by Paul H. Hunter Liste des fréquences / publiée par le bureau de l'union internationale des télécommunications radio communication series Radio direction finders / by Donald S. Bond monographien der elektrischen nachrichtentechnik Theorie der Spulen und übertrager / von Richard Feldtkeller Radio engineering / by Frederick Emmons Terman Measurements in radio engineering / by Frederick Emmons Terman Communication engineering / by William Littell Everitt