Sixtieth Annual Report of the Geological Survey of Wyoming (1993)

Glass, G.B., and Bruhnke, S.G., 1993, Sixtieth annual report of the Geological Survey of Wyoming for fiscal year 1993, July 1, 1992 to June 30, 1993: Geological Survey of Wyoming [Wyoming State Geological Survey] 1992–1993 Annual Report, 16 p.