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U.S. Army Corps of Engineers. Portland District. Draft Environmental Impact Statement: the Siuslaw Estuary and the Umpqua Estuary, Including the Smith River. [Portland, Or.]: The District, 1975.
St. John, Alan D.. The herpetology of the interior Umpqua River drainage, Douglas County, Oregon In Technical Report (Oregon. Nongame Wildlife Program). Portland, Or.: Oregon Dept. of Fish and Wildlife, Nongame Wildlife Program, 1985.
U. S. Bureau of Land Management. Mt. Scott Resource Area, U. S. Forest Service. North Umpqua Ranger District, and Umpqua National Forest. Little River Watershed Analysis. [Roseburg, Or.]: Umpqua National Forest, North Umpqua Ranger District, 1995.
U. S. Forest Service. North Umpqua Ranger District, and Umpqua National Forest. Middle North Umpqua Watershed Analysis: Version 1.0. [Roseburg, Or.]: Umpqua National Forest, North Umpqua Ranger District, 2001.
U.S. Army Corps of Engineers. Portland District. The Siuslaw Estuary and the Umpqua Estuary, Including the Smith River: Final Environmental Impact Statement. Portland, Or.: U.S. Army Corps of Engineers, Portland District, 1975.