| Steel guard rails for stairways, balconies, and roofs. General specifications
Ограждения Лестниц, Балконов и Крыш Стальные. Общие технические условия. |
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GOST 4543-71Alloyed construction steel. Specifications. |
SNiP 23-05-95Natural and Artificial Lighting |
GD Постановление 304 от 21.05.2007Government of the Russian Federation. … |