observer's fighting vehicles directory observer's army vehicles directory to 1940 / research and editing by Bart H. Vanderveen [and] Olyslager Organisation BV Eerste Wereldoorlog : afbeeldingen van verschillend militair materieel; zoals wapens, gereedschap, munitie, (pantser)voertuigen en gasmaskers] War on wheels : the evolution of an idea / C.R. Kutz schiffer military history German infantry carts, Army field wagons, Army sleds, 1900-1945 / Wolfgang Fleischer ; [transl from the German by Ed Force]