| Online link | https://cmgds.marine.usgs.gov/catalog/whcmsc/open_file_report/ofr2000-304/tocpnt1.faq.html |
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| Description | This GIS layer contains a point overlay showing the location of samples with Total Organic Carbon (TOC). This layer shows the distribution of samples used in the creation of the TOC polygon layer, listoc. |
| Originators | () and () |