Indian sappers laying telephone cables in trench Indian Sappers removing electric fittings from Turkish telephone lines - With the troops in Mesopotamia Working Instructions. Telephone Set, L. WO 1530 - Engeland Voorschrift Field telephones and telegraphs for army use : including an elementary course in electricity and magnetism / by E.J. Stevens Behelf zum Studium der Militärtechnik an den k. u. k. Korpsoffiziersschulen : H. 3: Telephon- und Telegraphenwesen training manual / united states army Telephone switchboard operator : students manual for all arms Reference data for radio engineers Reference data for radio engineers Signal : Commercial telephone, telegraph and electric time service, general - USA Voorschrift, Army Regulations, No. 105-30 Bell telephone Mfg Co. Lichte veldtelefoonuitrusting CFTH (Compagnie Francaise Thomson Houston Groupe Electronique). Teleradar, Multiplex radio telephone links, Émetteur-récepteur subminiature TH 736 Artillerist : tragbarere Feld-Fernsprech-Apparat [Fabrieksdocumentatie van} / Aktiengesellschaft Mix & Genest Telephon- und Telegraphen-Werke
