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

Description:

Collier in 1945, Lippitt and Radke in 1946

Added to timeline:

Action Research

BySantiago Burgos

27 Nov 2019

0

0

273

Date:

jan 1, 1946

Now

~ 80 years ago

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