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Showing 1 - 1 results of 1 for search '"Report of investigations (United States. Bureau of Mines) ;"', query time: 0.19s Refine Results
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    Longer-than-seam-height drill development program /
    by Derby, G. K. (George K.)
    Published 1978
    “...Report of investigations (United States. Bureau of Mines) ;...”
    Government Document Book
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