Environmental protection. Metrological support for monitoring pollution of air and surface waters and soil contamination. Basic provisions
Охрана природы. Метрологическое обеспечение контроля загрязненности атмосферы, поверхностных вод и почвы. Основные положения. |
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NPB 239-97Ventilation Ducts. Test Method of Fire Resistance |
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