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| pollution of rivers; rivers contamination | |||
| river pollution (The direct or indirect human alteration of the biological, physical, chemical or radiological integrity of river water, or a river ecosystem; Прямое или косвенное изменение человеком биологической, физической, химической и радиологической целостности речной воды либо речной экосистемы) | |||
| contamination of rivers | |||
| river contamination; river pollution; stream pollution | |||
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| river pollution (сточными водами) | |||
| river pollution | |||
| impurity of river | |||
| загрязнение рек: 14 phrases in 6 subjects |
| American usage, not spelling | 2 |
| Ecology | 3 |
| Economy | 2 |
| Energy industry | 1 |
| Makarov | 3 |
| Water supply | 3 |