Jerma
| Articul per Ladin Gherdëina | 
|
| Jerma | |
|---|---|
 | |
| Raion | |
| Stat |  Bulgaria,  Serbia
|
| Carateristiches natureles | |
| Bocia | Nišava |
| • coordinedes | 43°10.4′N 23°3.7′E / 43.1733°N 23.0617°E |
| Lunghëza | 74 km |
| Purteda | |
| • mesana | 2,4 m3/s |
Jerma ie n ruf te la Bulgaria y te la Serbia. L à na lunghëza de 74 km.