International Journal of Coal Geology · 2007 · 28 citations · 4 references
Natural SciencesGeologyResource EconomicsEconomic GeologyEnvironmental GeologyResource PolicyCoal EconomicsCoal GeologyEnergy HistoryEnergy SecurityFossil Fuel DeclineFossil Fuel PolicyCoal GeographiesCoal HistoryCoal MarketsCoal Regional DevelopmentCoal Resource Depletion
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Age of volcanism and rifting in southwestern Ethiopia
A Davidson, D. C. Rex · Nature · 1980 · 217 citations