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D
Dietrich, William Eric. Sediment Production in a Mountainous Basaltic Terrain in Central Coastal Oregon. M.S. ed. Seattle, Wa.: University of Washington, 1975.
Douglas County(Or.), and Douglas County(Or.). Planning Dept.. Douglas County: Community Wildfire Protection Plans., 2017.
→ douglascounty-oregon.us/DocumentCenter/View/3604/Community-Wildfire-Protection-Plan---Full-Plan-PDF
Douglas County(Or.). Planning Commission. The Character of Douglas County. Roseburg, Or.: Douglas County Planning Commission,, 1968.
→ cdm16085.contentdm.oclc.org/digital/collection/p16085coll23/id/29659/rec/23
R
Ramp, Len. Geology & mineral resources of Douglas County, Oregon In Bulletin (Oregon. Dept. of Geology and Mineral Industries) . Portland, Or.: Oregon Dept. of Geology and Mineral Industries, 1972.
→ www.oregongeology.org/pubs/B/B-075.pdf
Rinella, J. F., Geological Survey(U.S.), and Oregon. State Engineer. Lakes of Oregon: Volume 6: Douglas County. Portland, Or.: U.S. Geological Survey, Water Resources Division, 1979.
→ pubs.er.usgs.gov/publication/70199344