Figure 6.4. Plot of carbon isotopic values of Elphidium since 1750 AD.
U.S. Department of the Interior | U.S. Geological Survey URL: http://pubsdata.usgs.gov/pubs/of/2004/1350/figures_pages/fig6_4.htm Page Contact Information: Eastern Publications Group Page Last Modified: 00:05:36 Sun 13 Jan 2013
