1. MIGAL-Galilee Research Institute; Hydro-Geochemistry Lab.; Kiryat Shmona 11016 Tel Hai College, Upper Galilee Israel
2. Dep. of Earth and Environmental Sciences; California State Univ. East Bay; Hayward CA 94542
3. Dep. of Soil and Crop Sciences; Colorado State Univ.; Fort Collins CO 80523-1170