TY - RPRT TI - Comparison of dialysis membrane diffusion samplers and two purging methods in bedrock wells AU - T.E. Imbrigiotta AU - T. A. Ehlke AU - P.J. Lacombe AU - J.M. Dale PY - 2002 UR - https://pubs.usgs.gov/publication/70023982 ID - 70023982 ER -