(DHEW publication (OS) 72-43; President's Committee on Mental Retardation.)
Notes:
(DHEW publication (OS) 72-43; President's Committee on Mental Retardation.) † Distribution Made by Issuing Office. President's Committee on Mental Retardation, Washington, DC 20201
Availability:
† Distribution Made by Issuing Office. President's Committee on Mental Retardation, Washington, DC 20201