Environmental protection. Water. General requirements for protection of groundwater
Охрана природы. Гидросфера. Общие требования к охране подземных вод. |
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GOST 6996-66Welded joints. Methods for determining … |
RusRWS СТО РС ФЖТ 11-2005State Agency Registrar Of Certification For … |
PUE PUE, 7, Section 3Pue_7_Section 3_Protection and Automatic Devices |