URL dokumen:
https://prisma.simaster.ugm.ac.id/karya_files/groundwater-vulnerability-zoning-using-epik-method-in-semanu-district--gunungkidul--special-region-of-yogyakarta-dcfcd07e645d245babe887e5e2daa016/1f9f4d54-b055-11ee-abf0-e4434b0aade8