Coal exploratory drilling; a cost percentage comparison of three methods

Open-File Report 79-1100
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Publication type Report
Publication Subtype USGS Numbered Series
Title Coal exploratory drilling; a cost percentage comparison of three methods
Series title Open-File Report
Series number 79-1100
DOI 10.3133/ofr791100
Edition -
Year Published 1979
Language ENGLISH
Publisher U.S. Geological Survey,
Description 11 p. :graphs, ill. ;28 cm.
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