Longwall mining methods in some mines of the Middle Western states

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086	0	⊔	‡aI 28.27:6893
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	‡aLongwall mining methods in some mines of the Middle Western states / ‡cby Albert L. Toenges.
260	⊔	⊔	‡a[Washington, D.C.] : ‡bU.S. Dept. of the Interior, Bureau of Mines, ‡c1936.
300	⊔	⊔	‡a62 p. : ‡bill. ; ‡c27 cm.
336	⊔	⊔	‡atext ‡btxt ‡2rdacontent
337	⊔	⊔	‡acomputer ‡bc ‡2rdamedia
338	⊔	⊔	‡aonline resource ‡bcr ‡2rdacarrier
490	0	⊔	‡aInformation circular / United States Department of the Interior, Bureau of Mines ; ‡v6893
504	⊔	⊔	‡aIncludes bibliographical references.
538	⊔	⊔	‡aMode of access: Internet.
650	⊔	0	‡aLongwall mining ‡xEquipment and supplies.
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