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Federal
Surficial geology of Africa (geo7_2ag) 46 recent views
Department of the Interior —
Surficial geology (geo7_2ag). -
Federal
Geologic Provinces of Africa, 2000 (prv7_2ag)
Department of the Interior —
This coverage includes arcs, polygons and polygon labels that describe U.S. Geological Survey defined geologic provinces of the Africa. Each province has a set of...