Kirkham, Robert M books & textbook
Late Cenozoic Evaporite Tectonism and Volcanism in West-Central Colorado (Geological Society of America Special Paper)
Kirkham, Robert M. Scott, Robert B. Judkins, Thomas W.
Geological Society of Amer /2002T Paperback / 234 Pages
isbn-10: 0813723663 / isbn-13: 9780813723662
Earthquake potential in Colorado: A preliminary evaluation (Bulletin / Colorado Geological Survey, Department of Natural Resources, State of Colorado)
Colorado Geological Survey, Dept. of Natural Resources, State of Colorado /1981T Unknown Binding / 171 Pages