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Paul Werner; American geochemist, geologist (1930-1973).
Reference
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Updated
Oct 18, 2010 12:00 PM
The boundaries shown on the maps above are approximate and are intended
only to portray the locations of named features and their rough extents.
Changes in the control network drop down are not reflected automatically on the map.
You may wish to select a different layer on the map to match the control network
for the geometry you are viewing.