Zur geologie und oberflächengestaltung von Nordost-Katanga (Belgisch-Kongo)

"Literatur": p. [4]-7.

Life on the Kongo.

Mode of access: Internet.

Études Bakango : notes de sociologie coloniale /

Mode of access: Internet.

Narrative of an expedition to explore the river Zaire, usually called the Congo in South Africa, in 1816 /

Mode of access: Internet.

Comparative handbook of Congo languages; being a comparative grammar of the eight principal languages spoken along the banks of the Congo river from the west coast of Africa to Stanley Falls, a distance of 1300 miles, and of Swahili, the "lingua franca" of the country stretching thence to the east coast, with a comparative vocabulary giving 800 selected words from these languages, with their English equivalents, followed by appendices on six other dialects;

Mode of access: Internet.