TY - RPRT TI - The approaching obsolescence of 137Cs dating of wetland soils in North America AU - Judith Z. Drexler AU - Christopher C. Fuller AU - Stacey A. Archfield PY - 2018 DO - 10.1016/j.quascirev.2018.08.028 UR - https://pubs.usgs.gov/publication/70201612 ID - 70201612 ER -