Schweger, C.E., and Matthews Jr., J.V., 1985, Early and middle Wisconsinan environments of eastern Beringia: stratigraphic and paleoecological implications of the Old Crow tephra: GĂ©ographie physique et Quaternaire, v. 39, n. 3, p. 275-290.
Citation Updated: 2016-10-01 07:41:06