| Título |
Agricultural threats to groundwater quality / proceedings of the workshop organized by the International Hydrological Programme (IHP) of the United Nations Educational, Scientific and Cultural Organization (UNESCO), the Mediterranean Agronomic Institute of Zaragoza (CIHEAM) of the Geotechnical Engineering and Geosciences Department of the Technical University of Catalonia (UPC), Zaragoza, 27-30 october 1996 ; editors, L. Candela and A. Aureli |
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