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| Тема |
|---|
| Water pollution [3] |
| water pollution [1] |
| Water Pollution Index [1] |
| Water pollution index [1] |
| water pollution index (WPI) [1] |
| Water Quality [1] |
| Water quality [7] |
| water quality [9] |
| water quality assessmant [1] |
| water quality assessment [1] |
| water quality indicators [1] |
| Water quality parameters [1] |
| Water regime [1] |
| Water relations [1] |
| Water reservoir [1] |
| Water resources [1] |
| water samples [1] |
| water shortage [1] |
| Water status [1] |
| Water stress [4] |