Mineral resources of the Black Mountains North and Burns Spring Wilderness Study Areas,Mohave County,Arizona / J.E.Conrad,R.H.Hill,R.C.Jachens,J.T.Neubert, 1990. - 22 p. - Текст : непосредственный.
Mineral resources of the Hawk Mountain Wilderness study area, Harney county, Oregon / B.D.Turrin,J.E.Conrad,D.Plouff и др., 1989. - 16 p. - Текст : непосредственный.
Conrad J.E. Age of tephra beds at the Ocean Point dinosaur locality,North Slope,Alaska,based on K-Ar and 40Ar Ar/39 Ar analyses / J.E.Conrad,E.H.McKee,B.D.Turrin, 1992. - III,12 p. p. - Текст : непосредственный.