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AIzaSyCYaC8UkdPkQKLFUmpasLV5eC3M802CrcA
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2

jan 1, 1917 - Lev Vygotsky embarked on his teaching carrer

Description:

~date may not be exact

Added to timeline:

6 Sep 2017
0
0
142
History of the ECE Profession

Date:

jan 1, 1917
Now
~ 101 years ago
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