Institution: | (1) U.S. Bureau of Mines, 20241 Washington, D.C.;(2) Campus de l'Université de Montréal, H3C 3A7 Montreal, Quebec, Canada;(3) U.S. Geological Survey, 22092 Reston, Virginia;(4) U.S. Geological Survey, 94025 Menlo Park, California;(5) Universitas Negeri Padjadjaran, Bandung, Indonesia;(6) Resources for the Future, Inc., 20036 Washington, D.C. |