united states strategic bombing survey Railway viaduct at Bielefeld, Germany united states strategic bombing survey Railway viaduct at Altenbeken, Germany united states strategic bombing survey Utilities division : plant reports united states strategic bombing survey Submarine assembly shelter : Farge, Germany united states strategic bombing survey Physical damage division : report (ETO) united states strategic bombing survey Railway bridge, Eller, Germany Pamphlet on the evolution of the art of fortification 1919 / W.M. Black speed and power of ships : a manual of marine propulsion / by D.W. Taylor manual Electrical instruments and telephones of the U.S. signal corps : revised 1910 Multiplex telephony and telegraphy by means of electric waves guides by wires / G.O. Squier Sailing directions for New Guinea and the islands eastward of Celebes and Timor Wehrgeologie in ihrer Bedeutung für die Landesverteidigung / von Erich Wasmund