Tracer gas as an aid in mine ventilation analysis / by E.D. Thimons and F.N. Kissell.
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Format: | Government Document Book |
Language: | English |
Published: |
[Washington] :
U.S. Bureau of Mines : [Supt. of Docs., U.S. G.P.O.(distributor)],
[1974]
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Series: | Report of investigations (United States. Bureau of Mines) ;
7917. |
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