Related Clues:

• Serb or Czech
• Bulgarian, for one
• Serb or Croat, e.g.
• Havel, for one
• Tesla, by birth
• Ukrainian or Bulgarian
• Serb or Pole
• Bulgar or Pole, e.g.
• Croat or Serb, e.g.
• Czech or Croat
• Many a Balkan native
• Cossack, usually
• Pole classification
• Pole or Croat
• Croat or Pole