1995. National Geospatial-Intelligence Agency. This datalayer is a point coverage representing wells and springs located throughout current VMap1 geographic coverage areas. Features in this laye...
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1995. Smithsonian Institution, Global Volcanism Program. Volcanoes of the World is a point theme representing volcanoes thought to have been active in the last 10,000 years (Holocene). The data include a ...
1995. E. Eugene Oross Associates.