1. Land Resources and Environmental Science Dep.Montana State Univ.334 Leon Johnson HallBozemanMT59717
2. USDA‐ARSGeorge E. Brown, Jr. Salinity Lab.450 W. Big Springs RoadRiversideCA92507
3. Dep. of Biological and Agricultural Engineering, 301 Scoates HallTexas A&M Univ.College StationTX77843‐2117
4. U.S. Geological SurveyMS 423, 1180 Town Center DriveLas VegasNV89134