1. Tufts Univ.; 105 Anderson Hall Medford MA 02153
2. USDA-ARS; George E. Brown, Jr. Salinity Laboratory; 450 W. Big Springs Rd. Riverside CA 92507-4617
3. Dep. of Civil and Environmental Engineering; Univ. of Michigan; 181 EWRE, 1351 Beal Ave. Ann Arbor MI 48109-2125
4. J.C. Steele & Sons, Inc.; 710 South Mulberry St. Statesville NC 28677