| Crushed rock and gravel from solid rock for construction. Specifications
Щебень и гравий из плотных горных пород для строительных работ. Технические условия. |
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OST 51-40-93Combustible natural gases supplied and … |
SNiP 1.06.05-85Regulations Governing Designer Supervision of … |
GOST 12.2.037-78SSBT. Occupational Safety Standards System. … |