&bu1=The source of the river Bug in Western Ukraine. (photo: A. Sitter/TU Dresden) & &bu2=The river Bug near Dobrotvir, also called Western Bug. (photo: A. Ertel/TU Dresden) & &bu3=Power plant at the barrage of the river Bug near Dobrotvir. (photo: F. Tavares/TU Dresden) & &bu4=Lime manufacturing firm at the river Bug near Busk. (photo: A. Sitter/TU Dresden) &