| Standards of Land Allocation for Trunk Pipelines and Sewer Mains
Нормы отвода земель для магистральных водоводов и канализационных коллекторов |
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SakhalinGD 471Boundaries and Sizes of Water Conservation Zones |
GOST 12821-80Steel butt-welded flanges for PN from 0.1 to … |
GOST 12.4.026-76SSBT. Occupational Safety Standards System. … |