Government contracts. Joint statement by War, Navy, and Treasury Departments and Maritime Commission, purposes, principles, policies, and interpretations under sec. 403 of 6th supplemental national defense appropriation act, 1942 (Public 528, 77th Congress), approved .Apr. 28, 1942, as amended by sec. 801 of revenue act of 1942 (Public 753, 77th Ccngress), approved Oct. 21, 1942.