GeoData @ UCB

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1. Global GIS : Land ice areas

1997. United States. National Imagery and Mapping Agency. This datalayer is a polygon coverage representing land ice areas (snow fields or ice fields which are on land) worldwide and was published as part ... American Geological Institute.

2. Global GIS : Natural resources extraction areas and fishery industrial areas

1997. United States. National Imagery and Mapping Agency. This datalayer is a polygon coverage representing worldwide locations where natural resources are being extracted from the earth and locations wher... American Geological Institute.