Mineral resources of the Coal canyon,spruce Canyon,and Flume Canyon wilderness study areas,Grand County,Utah / R.P.Dickerson,J.D.Gaccetta,D.M.Kulik,T.Kreidler, 1990. - 29 p. - Текст : непосредственный.
Mineral resources of the San Rafael Swell Wilderness Study Areas,Including Muddy Creek,Crack Canyon,San Rafael Reef,Mexican Mountain,and Sids Mountain Wilderness Study Areas,Emery County,Utah / S.Bartsch-Winkler,R.P.Dickerson,H.N.Barton и др., 1990. - X,56 p. p. - Текст : непосредственный.
Mineral resources of the Tabeguache Creek wilderness study area, Montrose County, Colorado / R.P.Dickerson,H.N.Barton,H.R.Blank,D.C.Scott, 1989. - V,15 p. p. - Текст : непосредственный.