@book {23891,
	title = {Geology \& mineral resources of Douglas County, Oregon},
	series = {Bulletin (Oregon. Dept. of Geology and Mineral Industries) },
	number = {75},
	year = {1972},
	note = {Includes colored map.},
	month = {1972},
	publisher = {Oregon Dept. of Geology and Mineral Industries},
	organization = {Oregon Dept. of Geology and Mineral Industries},
	chapter = {106 pp.},
	address = {Portland, Or.},
	keywords = {coastal hazards, Douglas County, erosion, geology, heavy minerals, landslides, mining, Or., paleosciences, sediments},
	url = {https://www.oregongeology.org/pubs/B/B-075.pdf},
	author = {Ramp, Len}
}
@mastersthesis {23281,
	title = {Heavy Detrital Minerals of the South Umpqua River Drainage, Oregon},
	year = {1953},
	note = { },
	month = {1953},
	pages = {67 p.},
	school = {University of Oregon},
	type = {Masters Thesis},
	edition = {M.S.},
	chapter = {Dept. of Geography and Geology},
	address = {Eugene, Or.},
	keywords = {geology, heavy minerals, sediments, South Umpqua River, theses},
	author = {Ramp, Len}
}
