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Усны бохирдол: энэ юу вэ, шалтгаан, үр дагавар
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Хөрсний бохирдол: шалтгаан ба үр ...…Усны бохирдлын тухай тайлбарлавmn.eferritRecommended to you based on what's popular • FeedbackНийслэлийн Байгаль орчны газар
https://environment.ub.gov.mn/post/581WebНийслэлийн Байгаль орчны газраас сүүлийн жилүүдэд хийж байгаа хүнд металлын бохирдлын судалгаа болон бохирдол саармагжуулах арга зүйд …
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