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Условия труда (1 janv. 1870 – 1 févr. 1924)

Description:

В. И. Ленин изучал условия труда как фактор роста революционного настроения масс

Ajouté au bande de temps:

История развития образовательной области "БЖ"

ByДионис Чеботарь

19 déc. 2017

0

0

622

Date:

1 janv. 1870

1 févr. 1924

~ 54 years

Les images:

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