// todo need optimize like in event.jsp. Add indexing or not indexing this page. Охрана труда (1 jul 1711 año – 1 agos 1765 año) (Cinta de tiempo)
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Охрана труда (1 jul 1711 año – 1 agos 1765 año)

Descripción:

М. В. Ломоносов впервые изложил систему мероприятий, затрагивающих вопросы охраны труда

Añadido al timeline:

История развития образовательной области "БЖ"

ByДионис Чеботарь
19 dic 2017

fecha:

1 jul 1711 año
1 agos 1765 año
~ 54 years

Fotos:

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