Entering the era of human ecology
Subtitle: [report of] the President's Committee on Mental Retardation
Series: DHEW publication -- no. (OS) 72-7
Publisher: The Committee
Published: 1972
Place of publication: Washington
Language: eng
Number of pages: 32
Subjects: Human ecology; People with mental disabilities
Other titles: MR 71
Notes: Cover title.

At head of title: MR 71.