Wirtschaftsgeographie - Westafrika (Nigeria, Kamerun), 4-̊8N̊, 31̊5'-93̊0'E = Economic geography - West Africa (Nigeria, Cameroon) = Géographique économique - Afrique occidentale (Nigéria, Cameroun) : Bergbau, Verarbeitende, Energie /
Schätzl, Ludwig.
Berlin : Borntraeger,
1979.
With English and French summaries.
Includes bibliographies.