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1998
National Oceanic and Atmospheric Administration. NOAA's Estuarine Eutrophication Survey: Pacific Coast Region In NOAA's Estuarine Eutrophication Survey. Vol. 5. v.5 5. Silver Spring, MD: Office of Ocean Resources Conservation and Assessment, 1998.
1914
Van Winkle, Walton. "Siletz River." In Water-Supply Paper / Department of the Interior, United States Geological Survey, p.48-50. Vol. no.363. Quality of the Surface Waters of Oregon no.363. Washington, D.C., 1914.