Assessing groundwater vulnerability to pollution in the Puck region (denudation moraine upland) using vertical seepage methodDawid Potrykus, Anna Gumuła-Kawęcka, Beata Jaworska-Szulc, Małgorzata Pruszkowska-Caceres and Adam SzymkiewiczE3S Web Conf., 44 (2018) 00147DOI: https://doi.org/10.1051/e3sconf/20184400147