Russian standards
Electrical apparatus for use in the presence of combustible dust. Part 1. Electrical apparatus protected by enclosures and surface temperature limitation. Section 1. Specification for apparatus
Document status: Active
Semiconductor silicon, raw materials for its production and quartz. Methods of phosphorus determination
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Boiler plant. Heat-mechanical equipment. General technical requirements
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Water-tube boilers and auxiliary installations. Part 1. General
Document status: Active