Environmental protection. Water. Rules for monitoring water quality of reservoirs and streams
Охрана природы. Гидросфера. Правила контроля качества воды водоемов и водотоков. |
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GOST 16293-89Package drilling rigs for development and deep … |
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GOST 22690-88Concrete. Determination of strength by … |
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KKLD 13Statute of Engineering Construction Surveys |