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| hydro amelioration (Plans for the construction of water, energy and hydro-amelioration facilities should be viewed in this light. Alexander Demidov) | |||
| hydrotechnology | |||
| hydrotechnical amelioration | |||
| hydromelioration | |||
| hydrotechnical melioration | |||
| hydrotechnical land improvement | |||
| гидромелиорация: 1 phrase in 1 subject |
| United States | 1 |