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Fertilizers. Determination of ammoniacal nitrogen content in presence of other substances which release ammonia when treated with sodium hydroxide. Titrimetric method
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Textile materials for filtration of industrial aerosols. Method for determination of wear resistance
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Tourism and related services. Trails. Arrangement of trails in order to ensure the safety of tourists and environmental protection. Minimum requirements
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Packaging and the environment. Marking for material identification
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Haberdasher's artificial leather. General specifications
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