1. Project no. 3 -- Toxic gases in armored vehicles. Partial report on sub-project no. 3-9 -- Determination of the ventilation requirements for gas-proofing tanks : ventilation requirements for gas-proofing the M-5 tank Author(s): Hatch, Theodore F., authorWalpole, Robert H., author Publication: Fort Knox, Kentucky : Armored Medical Research Laboratory, 24 December 1942 Subject(s): Air Pollutants, OccupationalMotor VehiclesWeaponsVehicle EmissionsVentilationMilitary PersonnelWorld War IIUnited States