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1 jan 1954 ano - Pub. L. 83-531—The Cooperative Research Program allowed limited funding for cooperative educational research by the U.S. Office of Education and colleges, universities, and departments of education. Mental retardation was targeted.

Adicionado na linha do tempo:

History of special education

Byemeline
12 ago 2019
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Data:

1 jan 1954 ano
Agora
~ 70 years ago
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