TY - RPRT TI - Occurrence and distribution of PFAS in sampled source water of public drinking-water supplies in the surficial aquifer in Delaware, 2018; PFAS and groundwater age-dating results AU - Betzaida Reyes PY - 2021 DO - 10.3133/ofr20211109 UR - https://pubs.usgs.gov/publication/ofr20211109 ID - ofr20211109 ER -