1980. 2002-06-01T04:00:00Z. 2022-12-22T04:01:21Z. Geological Survey (U.S.). The Survey. English. text. Public. Washington (State). Quaternary.
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1980. 2015-06-29T13:57:17Z. 2015-07-14T22:10:06Z. Cannon, William F. U.S. Geological Survey. English. cartographic image. Public. Michigan, Baraga County, Gogebic County, Houghton County, Iron County, Ontonagon County, and U.S.
1980. 2008-10-20T17:57:20Z. 2011-03-28T23:34:03Z. Fisher, Donald W. University of the State of N.Y., State Education Dept., Williams & Heintz Map Corp.). English. Public. New York (State) and Mohawk River Valley.
1980. 2015-02-27T14:58:43Z. 2015-03-10T22:10:25Z. Sendlein, Lyle V. A. Dept. of the Interior, U.S. Geological Survey. English. Public. Iowa.
1980. 2018-06-04T17:25:14Z. 2018-06-04T17:25:14Z. Dottin, O. Bureau de recherches géologiques et minières. French. cartographic image. Public. France and France.
1980. 2022-11-18T19:39:54Z. 2022-11-22T22:33:44Z. Meiiji Resource Consultants. U.S. Geological Survey. English. cartographic image. Public. Utah and Kane County.
1980. 2017-12-19T14:38:37Z. 2017-12-19T14:38:37Z. Swinden, H. S. Mineral Development Division. English. cartographic image. Public. Newfoundland and Labrador and Bay d'Espoir region.
1980. 2008-09-23T12:48:52Z. 2016-08-10T21:16:17Z. Lane, Ed. Bureau of Geology. English. Public. Florida and Fort Pierce quadrangle.
1980. 2008-09-25T14:01:32Z. 2011-03-25T23:32:48Z. Knapp, Michael S. Bureau of Geology. English. Public. Florida and Tampa quadrangle.
1980. 2008-09-30T14:22:46Z. 2011-03-28T23:30:47Z. Lane, Ed. Florida Dept. of Natural Resources, Bureau of Geology. English. Public. Florida and West Palm Beach.