International directory of mental retardation resources /
Dybwad, Rosemary Ferguson,1910-
United States.President's Committee on Mental Retardation.
International League of Societies for Persons with Mental Handicap.
Washington, D.C. : U.S. Dept. of Health and Human Services, President's Committee on Mental Retardation ; Brussels, Belgium : International League of Societies for Persons with Mental Handicap,
[1989]
Mental retardation facilities
People with mental disabilities