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Nature protection. Hydrosphere. General rules for water pollution protection over well drilling and oil and gas extracting of land
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Nature protection. Hydrosphere. General requirements for surface water protection against pollution
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Water. Spectrophotometric determination of chlorophyll a
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Nature protection. Hydrosphere. General requirements for sampling of botton sediments of water objects for their pollution analysis
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Nature protection. Hydrosphere. Hygienic requirements to recreation areas at water object
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Nature protection. Hydrosphere. Apparatus and mechanisms for selection, initial treatment and stering samples of natural waters. General specifications
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Nature protection. Atmosphere. Classification of emission according to composition
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Nature protection. Atmosphere. Terms and definitions of emission from motor vehicles, tractors, agricultural machinery and road-building vehicles
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Nature protection. Atmosphere. Automobile diesels. Exhaust smoke opacity. Rates and methods of measurement
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Nature protection. Atmosphere. Rates and testing methods of exhaust smoke from diesel engines, tractors and agricultural machines
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