Search Results - "I 28.27:6893"
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1
Longwall mining methods in some mines of Middle Western States.
Published 1936“…I 28.27:6893…”
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2
Longwall mining methods in some mines of the Middle Western states /
Published 1936“…I 28.27:6893…”
Search for the full-text version of this title in HathiTrust
Government Document Book
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3
Longwall mining methods in some mines of Middle Western States.
Published 1936“…I 28.27:6893…”
Full Text (via ProQuest)
Government Document eBook