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AIzaSyB4mHJ5NPEv-XzF7P6NDYXjlkCWaeKw5bc
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Охрана труда (1 juill. 1711 – 1 août 1765)
Description:
М. В. Ломоносов впервые изложил систему мероприятий, затрагивающих вопросы охраны труда
Ajouté au bande de temps:
История развития образовательной области "БЖ"
By
Дионис Чеботарь
19 déc. 2017
0
0
624
Date:
1 juill. 1711
1 août 1765
~ 54 years
Les images:
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