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1 ene 1968 año - The Declaration of General and Special Riglltsfor the Mentally Retarded international document is issued by the International League of Societies for The Mentally Handicapped.
Añadido al timeline:
History of special education
By
emeline
12 ago 2019
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0
2297
fecha:
1 ene 1968 año
Ahora mismo
~ 56 years ago
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