Geoscientific research in Northeast Africa : proceedings of the c onference on geoscientific research in Northeast Africa, Berlin, German y, 17-19 June, 1993 - Thorweihe, Ulf; Schandelimeier, Heinz (Rotterdam : A. A. Balkema, 1993)
Keywords: Earth sciences -- Africa -- Periodicals; Earth sciences -- Middle East -- Periodicals; Geology -- Africa -- Periodicals; Geology -- Middle East -- Periodicals