Language of the mentally retarded - Schiefelbusch, Richard L.; National Institute of Child Health and Human Development (U.S.).; University of Kansas. Bureau of Child Research (Baltimore University Park Press, 1972)
"The edited proceedings of a conference sponsored by the National Institute of Child Health and Human Development and hosted by the University of Kansas Bureau of Child Research, Lawrence, Kansas, February 16-18, 1970."
Keywords: Mentally handicapped -- Language -- Congresses