| Unified System for Corrosion and Aging Protection. Inorganic metal and non-metal coatings. Codes and symbols
Единая система защиты от коррозии и старения. покрытия металлические и неметаллические неорганические. Обозначения. |
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GOST 12.2.088-83SSBT. Occupational Safety Standards System. … |
GOST 12.1.036-81SSBT. Occupational Safety Standards System. … |
KKLD 537Procedure for Stay and Residence of Foreign … |