Entering the era of human ecology : [report of] the President's Committee on Mental Retardation

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110 1 ⊔ ‡aUnited States. ‡bPresident's Committee on Mental Retardation.
245 1 0 ‡aEntering the era of human ecology : ‡b[report of] the President's Committee on Mental Retardation.
260 ⊔ ⊔ ‡aWashington : ‡bThe Committee, ‡c1972.
300 ⊔ ⊔ ‡a[32] p. : ‡bill. ; ‡c28 cm.
490 0 ⊔ ‡aDHEW publication ; ‡vno. (OS) 72-7
500 ⊔ ⊔ ‡aAt head of title: MR 71.
500 ⊔ ⊔ ‡aCover title.
538 ⊔ ⊔ ‡aMode of access: Internet.
650 ⊔ 0 ‡aHuman ecology ‡zUnited States.
650 ⊔ 0 ‡aPeople with mental disabilities ‡zUnited States.
740 0 ⊔ ‡aMR 71.
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