Each of us more than once or twice noticed and walked on the streets of the open entrances to the city’s underground utilities, sewer and other wells. And…
City underground communications, dangers and safety prevention.
well
The simplest household and farm buildings for troops in the field, a directory.
, huts or dugouts are built, which are equipped with sunbeds or bunks, shelves and pyramids for storing weapons and equipment, lighting, and in the cold season and…