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Minerals and industry in Nigeria
(1957)
Land tenure and land administration in Nigeria and the Cameroons
Meek, C. K., (1957)
Adamawa : past and present ; an historical approach to the development of a northern Cameroons province
Kirk-Greene, Anthony H. M., (1958)
Industriestruktur Niederösterreichs, 1968-1972
Kaufmann, Herbert, (1974)
Belgisch-Kongo und Ruanda-Urundi
Kaufmann, Herbert, (1959)
Nigeria : Beobachtungen und Gedanken zu den Problemen eines neuen Staates
Kaufmann, Herbert, (1960)