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Coates D. et al (2003) Biodiversity and Fisheries in the Mekong River Basin Mekong River Commission, Mekong Development Series No.2, 2003 June
The Mekong River Basin
National Park Service. Maurice Wild and Scenic River. May 5, 2004. May 15, 2004. <http://www.nps.gov/rivers/wsr-maurice.html>
Route 55: An Ecological Quagmire
Richard L. Roberts, The State and the Economy in the Middle Niger Valley, 1700-1914 The State and the Economy in the Middle Niger Valley, 1700-1914 (Stanford, CA: Stanford University, 1987) 58.
The Scramble for Africa
Rubinkam, Michael. "Spill shuts Delaware River stretch, threatens wildlife". The Record (Bergen County, NJ). (2004): 28 November.
Pollution in the Delaware River
Unknown. "Public Hearing Set on Proposal to Reduce PCB Levels in the Delaware River."
Pollution in the Delaware River
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