International directory of mental retardation resources /
Dybwad, Rosemary F., (ed.)
International directory of mental retardation resources / - 3rd ed. - Belgium: International League of Societies For Person With Mental Handicap, [1986] - vii, 347 p. ; 21cm
Mental retardation - Directories
International directory of mental retardation resources / - 3rd ed. - Belgium: International League of Societies For Person With Mental Handicap, [1986] - vii, 347 p. ; 21cm
Mental retardation - Directories