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jan 3, 1953 - Concibió un método llamado"Estudio realizado por colegas , en un ambiente escolar...para mejorar la instrucción"
Added to timeline:
HISTORIA DE LA INVESTIGACIÓN ACCIÓN
By
Leomanu zm
7 Oct 2018
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408
Date:
jan 3, 1953
Now
~ 72 years ago
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