"southern Dobruja" . . "South Dobruja" . . . "Dobruja" . . . . "Southern Dobruja" . "Kadrilater" . . . . "Southern Dobrudzha" . . . . "southern part of Dobrudja" . "southern part" . "Southern Dobruja" . "Southern Dobrudja" . "Bulgarian Dobruja" . . "Southern plain of Dobruja" . . . "Cadrilater" .