1. Preventive medicine in the Northwest Service Command Northwest Division, United States Engineer Department and Northwest District, Sixth Service Command Publication: [Washington, DC] : [Historical Division, Army Medical Library], [1946] Subject(s): Military MedicinePreventive Health ServicesSanitary Engineering -- methodsWorld War IIUnited StatesCanadaUnited States. Army Service Forces. Northwest Service Command.United States. Army. Corps of Engineers. Northwest Division.United States. Army Service Forces. Service Command, 6th. Northwest District.