GEOMORPHOLOGICAL, HYDROGEOLOGICAL AND GROUNDWATER QUALITY ANALYSIS IN KARST SYSTEMS OF THE CENTRAL-WESTERN PART OF METALIFERI MOUNTAINS. - IACOB, George; BUZILĂ, Liviu Ioan; DORDAI, Lucian (Annals of the University of Oradea, Geography Series / Analele Universitatii din Oradea, Seria Geografie, 2023)