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| along the upper reaches of a river (Andrey Truhachev); on the upper course of the river (Andrey Truhachev); at the upper reaches of a river (Andrey Truhachev); on the upper reaches of a river (Andrey Truhachev) | |||
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| apically | |||
| в верховье: 23 a las frases, 10 temas |
| Agroquímica | 1 |
| Ecología | 3 |
| General | 2 |
| Geología | 1 |
| Hidrología | 2 |
| Makárov | 7 |
| Minería | 1 |
| Recursos hídricos | 1 |
| Recursos naturales y conservación de la vida silvestre. | 4 |
| Tecnología | 1 |