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1 jan 1946 ano - Start... ? Collier, Lippitt, and Radke

Descrição:

Collier in 1945, Lippitt and Radke in 1946

Adicionado na linha do tempo:

Action Research

BySantiago Burgos

27 nov 2019

0

0

269

Data:

1 jan 1946 ano

Agora

~ 79 years ago

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