Three coal mine ventilation studies using sulfur hexafluoride tracer gas

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086 0 ‡aI 28.23:8142
100 1 ‡aVinson, Robert P.
245 1 0 ‡aThree coal mine ventilation studies using sulfur hexafluoride tracer gas / ‡cby Robert P. Vinson and Fred N. Kissell ; Pittsburgh Mining and Safety Research Center.
260 ‡a[Washington] : ‡bU.S. Dept. of the Interior, Bureau of Mines, ‡c[1976].
300 ‡a[3], 19 p. : ‡bill. ; ‡c27 cm.
490 0 ‡aReport of investigations - Bureau of Mines ; ‡v8142
500 ‡aItem 637-A.
504 ‡aIncludes bibliographical references (p. 19).
538 ‡aMode of access: Internet.
650 0 ‡aSulfur hexafluoride.
650 0 ‡aMine ventilation.
700 1 ‡aKissell, Fred N.
710 1 ‡aUnited States. ‡bBureau of Mines.
899 ‡a39015078474676
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