Phillips, S. W. (2002). The US Geological Survey and the Chesapeake Bay. US Geological Survey circular 1220.
Chicago Style CitationPhillips, Scott W. "The US Geological Survey and the Chesapeake Bay." US Geological Survey Circular 1220 2002.
MLA CitationPhillips, Scott W. "The US Geological Survey and the Chesapeake Bay." US Geological Survey Circular 1220 2002.
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