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Four CD-ROM set containing 1,500 scanned, public domain photographs available from the U.S. Geological Survey Photographic Library in Denver for use as a photographic glossary of introductory geolo...
Four CD-ROM set containing 1,500 scanned, public domain photographs available from the U.S. Geological Survey Photographic Library in Denver for use as a photographic glossary of introductory geological terms. Photographs taken to support USGS projects and reports over the 116 years prior to 1992.