//-->
Soziologische Theorien und ihre Anwendung in der Sozialgeographie
Arnold, Heinz, (1988)
Central Europe : a regional and human geography
Mutton, Alice Florence Adelaide, (1961)
Fižičeska i socialno-ikonomičeska geografija na Bălgarija : sbornik materiali za srednoškolci i kandidat-studenti
Dončev, Dončo, (1999)
Current and potential demands for energy utilisation in Uganda
Langlands, B. W., (1976)
Factors in the changing form, location and distribution of settlements, with particular reference to East Acholi
Langlands, B. W., (1968)
Geographical notes on land tenure in Uganda