Geology for a changing world; a science strategy for the Geologic Division of the U.S. Geological Survey, 2000-2010 - Bohlen, Steven; Halley, Robert B.; Hickman, Stephen; Johnson, Samuel; Lowenstern, Jacob; Muhs, Daniel; Plumlee, Geoffrey; Thompson, George; Trauger, David; Zoback, Mary Lou (Circular, 1998)