Mapping groundwater vulnerability using drastic methodMeutia Nurfahasdi, Agnes Yofita Zega, Agree Manganju Evannels Silalahi, Dally Raj Singh, Aziz Babayev and Shakhlo AitovaE3S Web Conf., 434 (2023) 03019DOI: https://doi.org/10.1051/e3sconf/202343403019