Related Clues:
- European border river
- German river
- The ___-Neisse Line
- ___-Spree Canal
- German border river
- North Sea feeder
- Neisse River's outlet
- Treaty of Versailles river
- Baltic Sea feeder
- River through Frankfurt
- European boundary river
- Breslau's river
- Germany's Frankfurt an der ___
- Frankfurt's river
- Baltic Sea tributary