Measurement of ridge-spreading movements (Sackungen) at Bald Eagle Mountain, Lake County, Colorado, II [electronic resource] : continuation of the 1975-1989 measurements using a Global Positioning System in 1997 and 1999 / by D.J. Varnes ... [et al.].
Imprint
Denver, CO : U.S. Dept. of the Interior, U.S. Geological Survey, 2000.