Search SEDIS
| Data sets | Publications | Expeditions | Thesaurus |
Pernik coal basin  | |
|---|---|
| BT | Europe |
| .Southern Europe | |
| ..Bulgaria | |
| ...Pernik coal basin | |
| UF | Dimitrovo coal basin |
| RT | coal fields |
| SN | 15 miles SW of Sofia. Also search Pernik. |
| Data sets | Publications | Expeditions | Thesaurus |
| Pernik coal basin | |
|---|---|
| BT | Europe |
| .Southern Europe | |
| ..Bulgaria | |
| ...Pernik coal basin | |
| UF | Dimitrovo coal basin |
| RT | coal fields |
| SN | 15 miles SW of Sofia. Also search Pernik. |