1985. 2002-06-01T04:00:00Z. 2018-05-25T03:01:32Z. Osberg, Philip H. (Philip Henry). Maine Geological Survey, Dept. of Conservation. English. cartographic image. Public. Maine and Maine.
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2. Maps showing sea-floor topography, depth to bedrock, and sediment thickness, Penobscot Bay, Maine
1985. 2002-06-01T04:00:00Z. 2002-06-01T04:00:00Z. Geological Survey (U.S.). The Survey ; For sale by Branch of Distribution, USGS. English. Public. Maine and Penobscot Bay.
1985. 2002-06-01T04:00:00Z. 2015-10-27T22:26:19Z. National Geographic Society (U.S.). Cartographic Division. The Society. English. Public. Maritime Provinces and Maine.
1985. 2002-06-01T04:00:00Z. 2023-10-06T03:06:09Z. Geological Survey (U.S.). The Survey : [Books and Open-file Reports Section, distributor]. English. cartographic image. Public. Maine, New Hampshire, and Vermont.
1985. 2002-06-01T04:00:00Z. 2023-10-06T03:06:08Z. Geological Survey (U.S.). The Survey : [Books and Open-File Reports Section, distributor]. English. text. Public. Maine, Somerset County, and Franklin County.
1985. 2018-05-25T18:41:08Z. 2018-09-05T19:40:15Z. Dept. of Conservation, Maine Geological Survey. English. cartographic image. Public. Maine and Maine.