1972. American Geological Institute, Geological Survey (U.S.), and Environmental Systems Research Institute (Redlands, Calif.). This datalayer is a point coverage representing metallic and non-metallic mineral resources worldwide. This data was derived from the Mineral Resou... American Geological Institute.
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1972. North Decimal Degree 85.000000 South Decimal Degree -85.000000 East Decimal Degree 180.000000 West Decimal Degree -180.000000 Summaries of world ir... Ottawa : [s.n.], 1972.