El Niño, catastrophism, and culture change in ancient AmericaBrian Billman, David Hodell, Gary Huckleberry, David Keefer, Kirk A. Maasch, Paul Mayewski, Michael Moseley, James B., III Richardson, Paul Roscoe, Payson D. Sheets, S. Jeffrey K. Wilkerson, Jason Yaeger · First published 2008Open the Tome
Landslides under static and dynamic conditionsDavid K. Keefer, Carlton L. Ho · First published 1995Open the Tome
Bibliography of landslides, soil liquefaction, and related ground failures in selected historic earthquakesDavid K Keefer · First published 1981Open the Tome
Bibliography on landslides, soil liquefaction, and related ground failures in selected historic earthquakesDavid K. Keefer · First published 1981Open the Tome
Urban travel patterns for hospitals, universities, office buildings, and capitolsKeefer, Louis E. Witheford, David K., · First published 1969Open the Tome
