Geology for a changing world 2010-2020-Implementing the U.S. Geological Survey science strategy - Gundersen, Linda C.S.; Belnap, Jayne; Goldhaber, Martin; Goldstein, Arthur; Haeussler, Peter; Ingebritsen, S.; Jones, John; Plumlee, Geoffrey; Thieler, E.; Thompson, Robert; Back, Judith (Circular, 2011)