| Online link | https://cmgds.marine.usgs.gov/catalog/whcmsc/open_file_report/ofr2003-001/armstrong74.shp.faq.html |
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| Description | The sediment data presented in this data layer were from a geochemical study sited in Great Bay Estuary, New Hampshire. The analog data were originally converted into digital form for inclusion in a Gulf of Maine Contaminated Sediments Database. |
| Originators | (); (); (); (); (); (); (); (); and () |