A Proposed program for national action to combar mental retardation.

Manylion Llyfryddiaeth
Awdur Corfforaethol:	U.S. President Panel on Mental Retardation
Fformat:	Llyfr
Iaith:	Saesneg
Cyhoeddwyd:	Washington, D.C. U.S. Government Printing Office 1962.
Pynciau:	People with mental disabilities > United States. Mental retardation > United States.