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Das Forschungsinstitut Amani : Wirtschaft und Wissenschaft in der deutschen Kolonialpolitik Ostafrika 1900 - 1918
Bald, Detlef, (1972)
Portuguese settlement on the Zambesi : exploration, land tenure and colonial rule in East Africa
Newitt, M. D. D., (1973)
Colonial rule and regional imbalance in Central Africa
Fetter, Bruce, (1983)