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Water. Spectrophotometric determination of chlorophyll a
Document status: Active
Nature protection. Hydrosphere. General requirements for surface and sea waters, ice and atmosphere precipitation sampling
Document status: Active
Risk management. Guide for application of analysis techniques for dependability
Document status: Active
Occupational safety standards system. Respiratory protective devices for selfÂrescue. Filtering devices with hood for escape from fire. Requirements, testing, marking
Document status: Active
Fire dampers of ventilation systems. The test method for the fire resistance
Document status: Replaced by GOST R 53301-2013