The use and care of miners' safety lamps
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書誌事項
The use and care of miners' safety lamps
（Miners' circular, 12/a）
Government Printing Off., 1916
5th ed.
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注記
At head of title:Department of the Interior, Bureau of Mines
The use and care of miners' safety lamps
（Miners' circular, 12/a）
Government Printing Off., 1916
5th ed.
At head of title:Department of the Interior, Bureau of Mines