Coal-Mine Accidents in the United States, 1936

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Partner(s): UNT Libraries Government Documents Department
Collection(s): Technical Report Archive and Image Library

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2013 9 6 10 5 4 5 12 12 17 8 22 27 137
2012 4 2 3 6 4 3 1 6 2 4 2 2 39
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2010 0 0 0 0 1 0 0 0 0 0 2 0 3

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