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Creator
- Yugoslavia 2
- Bulgaria 1
- Greece 1
Topic
- Economic development 2
Region
- Bulgaria 2
- Macedonia 2
- Serbia 2
- Bosnia and Herzegovina 1
- Greece 1
- Montenegro 1
- Republic of Croatia 1
- Slovenia 1
Water Basin
- Danube River >> Romania 1
- Danube 1
- Lake Prespa 1
- Lake Prespa 1
- Struma River 1
- Struma 1
- Vardar River 1
- Vardar 1
Rights
- No Copyright - United States 2