Documentation of data format and content to accompany magnetic tape copies of various data files of the National Coal Resources Data System (NCRDS)--ECOAL, WCOAL, NEWCOAL, BMALYT, and USCHEM

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U.S. Dept.of the Interior, U. S. Geological Survey , [Reston, Va.?]
Coal -- Data processing, Information storage and retrieval systems -- Mines and mineral reso
Statementby M. Devereux Carter, Antoinette L. Medlin, and Kathleen K. Krohn
SeriesOpen-file report -- 81-1079, Open-file report (Geological Survey (U.S.)) -- 81-1079
ContributionsMedlin, Antoinette L, Krohn, Kathleen K, Geological Survey (U.S.)
The Physical Object
FormatMicroform
Pagination1 v.
ID Numbers
Open LibraryOL13605555M