Search SEDIS
| Data sets | Publications | Expeditions | Thesaurus |
underground channels  | |
|---|---|
| RT | drainage |
| ground water | |
| waterways | |
| channels | |
| underground installations | |
| infiltration galleries | |
| irrigation | |
| SN | Added to Thesaurus in 1981. |
| Data sets | Publications | Expeditions | Thesaurus |
| underground channels | |
|---|---|
| RT | drainage |
| ground water | |
| waterways | |
| channels | |
| underground installations | |
| infiltration galleries | |
| irrigation | |
| SN | Added to Thesaurus in 1981. |