Vacuum tube voltmeter : Hickok model 110-B - USA Voorschrift, Technical Manual, 11-2654 militair-strategisch denken in de Verenigde Staten en de Sowjet-Unie : overeenkomsten en verschillen / G.C. Berkhof en P.M.E. Volten american forces in action Salerno : American operations from the beaches to the Volturno : (9 September-6 October 1943) / Historical Division, War Department ; [with a forew. by …