Survey of natural resources of the African continent (draft report)

by United Nations Economic Commission for Africa, Rumeau, A., Dixey, F., Walker, H.O., Rodier, Jean A., Fournier, F., Drar, Mohammed, Koechlin, J., Khalil, Fouad, Jepson, W.F., Bourlière, F.

Enquête sur les ressources naturelles du continent africain (projet de rapport)

by United Nations Economic Commission for Africa, Rumeau, A., Dixey, F., Walker, H.O., Rodier, Jean A., Fournier, F., Drar, Mohammed, Koechlin, J., Khalil, Fouad, Jepson, W.F., Bourlière, F.