U.S. Dept. of Health, Education, and Welfare, Social Security Administration, Office of Policy, Office of Research and Statistics : for sale by the Supt. of Docs., U.S. G.P.O.1978
全国の図書館
件名... -- Congresses United States. Social Security Administration -- Congresses
件名(識別子)... -- Congresses United States. Social Security Administration -- Congresses