1. Univ. of Kafrelsheikh; Faculty of Agriculture Dep. of Soil and Water Sciences; 33 516 Kafr El-Sheikh Egypt
2. Univ. of Wuppertal; Dep. D, Soil- and Groundwater-Management; Pauluskirchstraße 7 42285 Wuppertal Germany
3. Louisiana State Univ.; Dep. of Oceanography and Coastal Sci.; School of the Coast and Environ. Energy; Coast & Environment Building Baton Rouge LA 70803