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1 jan 1931 ano - The Conference of Superintendents and Principals of American Schools for the Deaf changes its name to Conference of Executives of American Schools for the Deaf.

Adicionado na linha do tempo:

History of special education

Byemeline
12 ago 2019
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2721

Data:

1 jan 1931 ano
Agora
~ 94 years ago
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