United States. President's Committee on Mental Retardation.
[Washington, D.C.] : President's Committee on Mental Retardation : For sale by the Supt. of Docs., U.S. G.P.O., 1967-1979.
1978
United States. President's Committee on Mental Retardation.
Washington, D.C. : U.S. Dept. of Health and Human Services, Office of Human Development Services
1999
United States. President's Committee on Mental Retardation.
[Washington, D.C.] : President's Committee on Mental Retardation : For sale by the Supt. of Docs., U.S. G.P.O., 1967-1979.
1978
United States. President's Committee on Mental Retardation.
Washington, D.C. : U.S. Dept. of Health and Human Services, Office of Human Development Services
1999