Research Catalog

  • Analysis of acid precipitation samples collected by state agencies--sampling period January 1992-December 1992 [microform] : project summary / Lloyd S. Shepard.

    • Text
    • Research Triangle Park, NC : U.S. Environmental Protection Agency, Atmospheric Research and Exposure Assessment Laboratory, [1995]
    • 1995
  • Analysis of acid precipitation samples collected by state agencies, 1988 [microform] : project summary / Lloyd S. Shepard.

    • Text
    • Research Triangle Park, NC : U.S. Environmental Protection Agency, [1990]
    • 1990

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