Multiple-shift mechanical mining in some bituminous coal mines. Progress report 2

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100 1 ⊔ ‡aToenges, Albert L. ‡q(Albert Louis), ‡d1889- ‡0http://id.loc.gov/authorities/names/nr2002045456 ‡1http://id.loc.gov/rwo/agents/nr2002045456 ‡1http://viaf.org/viaf/51630718 ‡1http://isni.org/isni/0000000051691498
245 1 0 ‡aMultiple-shift mechanical mining in some bituminous coal mines. ‡nProgress report 2 / ‡cby Albert L. Toenges and Frank A. Jones.
260 ⊔ ⊔ ‡a[Washington, D.C.] : ‡bU.S. Dept. of the Interior, Bureau of Mines, ‡c1939.
300 ⊔ ⊔ ‡a58 p. : ‡bill. ; ‡c27 cm.
336 ⊔ ⊔ ‡atext ‡btxt ‡2rdacontent
337 ⊔ ⊔ ‡acomputer ‡bc ‡2rdamedia
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490 0 ⊔ ‡aInformation circular / United States Department of the Interior, Bureau of Mines ; ‡v7067
538 ⊔ ⊔ ‡aMode of access: Internet.
650 ⊔ 0 ‡aCoal mines and mining. ‡0http://id.loc.gov/authorities/subjects/sh85027364
700 1 ⊔ ‡aJones, Frank A.
710 1 ⊔ ‡aUnited States. ‡bBureau of Mines. ‡0http://id.loc.gov/authorities/names/n79063444 ‡1http://id.loc.gov/rwo/agents/n79063444
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