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| groundwater conditions | |||
| geohydrologic conditions (залегания угольного пласта); hydrogeologic conditions (залегания угольного пласта) | |||
| hydrogeological conditions | |||
| soils-rock-ground-water complex | |||
| гидрогеологические условия: 5 phrases in 4 subjects |
| Gas processing plants | 2 |
| Geology | 1 |
| Hydrogeology | 1 |
| Oil / petroleum | 1 |