Search Results - "I28.27..6874"

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    Methane-­indicating detectors prove dependable in sampling air in anthracite mines.

    Published 1936
    “…I28.27..6874…”
    Full Text (via ProQuest)
    Government Document eBook
  2. 2

    Methane-­indicating detectors prove dependable in sampling air in anthracite mines.

    Published 1936
    “…I28.27..6874…”
    Full Text (via ProQuest)
    Government Document eBook
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