Kenya, geothermal activity of Emuruangogolak and adjacent areas, 1:50 000: In: British Geological Survey Research Report SC/93/1 / geological mapping by Dr. P.N.Dunkley and Dr. M.Smith compilation by Dr. P.N. Dunkley - on base-map prepared from series Y731 1:50 000 topographic sheets and air photographs rift margin geology simplified from published 1:125 000 geological maps (EAGRU).Cartographic materials