[Bethesda, Md.] : Washington : [Dept. of Health, Education, and Welfare, Public Health Service, National Institutes of Health] ; For sale by the Supt. of Docs., U.S. Govt. Print. Off., 1976
Bethesda, Md. : Washington : U.S. Dept. of Health, Education, and Welfare, Public Health Service, National Institutes of Health ; For sale by the Supt. of Docs., U.S. Govt. Print. Off., 1976
Bethesda, Md. : Washington : U.S. Dept. of Health, Education, and Welfare, Public Health Service, National Institutes of Health ; for sale by the Supt. of Docs., U.S. Govt. Print. Off., 1976