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  1. 1
    Tritium in ground water in Mississippi, 1989-90 /
    by Slack, Larry J.
    Published 1991
    Government Document Microform Book
  2. 2
    U.S. Geological Survey Toxic Substances Hydrology Program : abstracts of the technical meeting, Monterey, California, March 11-15, 1991 /
    Published 1991
    Government Document Microform Book
  3. 3
    Data on chlorofluorocarbons (CClF and CClF) as dating tools and hydrologic tracers in shallow ground water of the Delmarva Peninsula /
    by Plummer, L. Niel
    Published 1993
    Government Document Microform Book
  4. 4
    Evaluation of sampling and field-filtration methods for the analysis of trace metals in ground water /
    by Pohlmann, Karl F.
    Published 1994
    Government Document Microform Book
  5. 5
    Geology, hydrology, and results of tracer testing in the Galena-Platteville aquifer at a waste-disposal site near Byron, Illinois /
    Published 1999
    Government Document Microform Book
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