Spatial and temporal variability in the quality of surface water in a semi-arid Mediterranean region (river Orontes-Lebanon)Z. Saad, K. Slim, V. Kazpard, O. El Samad et M. NasreddineEur. j. water qual., 35 2 (2004) 177-193DOI: https://doi.org/10.1051/water/20043502177