by the International Commission on Groundwater Working Group on Groundwater Contamination Risk Assessment ; Eric Reichard ... [et al.]IAHS Press (International Association for Hydrological Sciences)1990
edited by A. Sahuquillo, J. Andreu, T. O'Donnell; The symposium was organized by the International Commission on Water Resources Systems and the International Commission on Groundwater of the International Association of Hydrological Sciences (IAHS) and the Universidad Politécnica de ValenciaIAHS Press (International Association for Hydrological Sciences)1989