The improved permissible flame safety lamps / by L.C. Ilsley, A.B. Hooker, and E.J. Coggeshall.
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Format: | Government Document Book |
Language: | English |
Published: |
[Washington, D.C.] :
United States Bureau of Mines,
1936.
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Series: | Report of investigations (United States. Bureau of Mines) ;
3312. |
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