Coal mine ventilation

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110	1	⊔	‡aUnited States. ‡bMining Enforcement and Safety Administration.
245	1	0	‡aCoal mine ventilation / ‡cby Staff, Audio-Visual Services--Education and Training.
260	⊔	⊔	‡a[Washington] : ‡bU.S. Dept. of the Interior, Mining Enforcement and Safety Administration, ‡c1975.
300	⊔	⊔	‡aiii, 67 p. ; ‡c27 cm.
490	0	⊔	‡aMESA instruction guide ; ‡v1
500	⊔	⊔	‡a"Revised April 1975".
538	⊔	⊔	‡aMode of access: Internet.
650	⊔	0	‡aMine ventilation.
CID	⊔	⊔	‡a007052388
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DAT	1	⊔	‡a20120815054943.0 ‡b2023-03-04T19:01:52Z
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974	⊔	⊔	‡bPST ‡cPST ‡d20230304 ‡sgoogle ‡upst.000029752645 ‡y1975 ‡ric ‡qbib ‡tnon-US bib date1 >= 1929