German research in north-eastern Nigeria - Braukamper, Ulrich; Fricke, Werner, 1927-.; Jungraithmayr, Hermann (Stuttgart F. Steiner, 1991)
Keywords: Historiography -- Germany; Geography -- Research -- Germany; Travelers -- Nigeria -- Borno State -- Biography; Travelers -- Germany -- Biography; Borno State (Nigeria) -- Historiography; Borno State (Nigeria) -- Geography