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Тематическая безопасность и охрана труда (1 set 1929 ano – 1 out 1929 ano)

Descrição:

Курс "Тематическая безопасность и охрана труда" стал обязательным для вузов и страны, а с 1966 таковы стал курс "охрана" труда

Adicionado na linha do tempo:

История развития образовательной области "БЖ"

ByДионис Чеботарь
19 dez 2017
0
0
626

Data:

1 set 1929 ano
1 out 1929 ano
~ 1 months
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