Nations, J.D., and Beus, S.S., 1976, Teaching historical geology in the Grand Canyon: Journal of Geological Education, v. 24, no. 3, p. 77-81. Authors Nations, J.D., and Beus, S.S. Publication Date 1976 Citation Journal of Geological Education, v. 24, no. 3, p. 77-81. State AZ Province CP TR County CN MO Keywords Road Log More Keywords Road Log, AzGeoBib RefNum 7363