Showing 1 - 3 results of 3 for search 'Hackman, Bettie S.', query time: 0.12s Refine Results
  1. 1
    Stratigraphic framework and distribution of lignite in the Claiborne Group, Calhoun County, Arkansas /
    by Hackman, Bettie S.
    Published 1982
    Government Document Book
  2. 2
    Preliminary chart of stratigraphic nomenclature of Paleocene and Eocene lignite-bearing and associated strata of the Gulf Coastal Plain-Mississippi Embayment /
    by Hackman, Bettie S.
    Published 1983
    Government Document Book
  3. 3
    Stratigraphic framework and distribution of lignite in the Claiborne group, Calhoun County, Arkansas /
    by Hackman, Bettie S.
    Published 1984
    Government Document Map
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