Washington :; Washington : Dept. of Commerce, Office of the Assistant Secretary of Commerce for Science and Technology, National Bureau of Standards : for sale by the Supt. of Docs., U.S. Govt. Print. Off,; Dept. of Commerce, Office of the Assistant Secretary of Commerce for Science and Technology, National Bureau of Standards : for sale by the Supt. of Docs., U.S. Govt. Print. Off., 1979

Washington, DC : [Springfield, Va.] : U.S. Dept. of Commerce, National Bureau of Standards ; [Order from National Technical Information Service], 1980