Institute for Crustal Studies, University of California Santa Barbara, Institute for Crustal Studies, University of California Santa Barbara, Santa Barbara, Ca 93106 United States
Institute for Crustal Studies, University of California Santa Barbara, Institute for Crustal Studies, University of California Santa Barbara, Santa Barbara, Ca 93106 United States
U.S. Bureau of Reclamation, Denver federal center, P.O. Box 25007 D-8330, Denver, Co 80225 United States
Institute for Crustal Studies, University of California Santa Barbara, Institute for Crustal Studies, University of California Santa Barbara, Santa Barbara, Ca 93106 United States ; Institute de Radioprotection et de Surete Nucleaire, B.P. 6 - 92265 Fontenay-aux-Roses Cedex, Clamart, 92140 France