Place
- Bulgaria, Europe12
- France6
- Germany6
- Sofia Province, Bulgaria6
- Ruse, Bulgaria5
- Russian Soviet Federative Socialist Republic, Asia5
- Austria, Europe4
- England4
- Greece4
- India, Asia4
- Russia, Europe4
- Vienna, Austria4
- America, North America3
- Egypt, Africa3
- Hungary, Europe3
- Istanbul, Turkey3
- London, United Kingdom3
- Paris, France3
- Poland, Europe3
- Romania, Europe3