01170cam a2200361Ia 4500005768915MiAaHDL20080115000000.0m d cr bn ---auaua820610s1907 paua 001 0 eng dsdr-wu4903990(OCoLC)8509348PLFPLFGZMT45I6 v.86Rock boring ; Rock drilling ; Explosives and blasting ; Coal-cutting machinery ; Timbering ; Timber trees ; Trackwork.Rock boring ; Blasting ; Coal-cutting ; Timbering ; TrackworkScranton :International Textbook Co.,c1907.1 v. (various paging) :ill. ;23 cm.International library of technology ;86Mode of access: Internet.Mine timbering.Coal-mining machinery.Coal mines and miningExplosives.Railroad tracks.Timber.Blasting.Boring.Mineral industries.International Correspondence Schools.Trackwork.Timber trees.Timbering.Rock drilling.Coal-cutting machinery.Explosives and blasting00576891520080116123203.020080115000000.020120815134629.02025-06-17T18:02:06Z2025-06-17T17:30:02ZSDR-WUUNKNOWNloader.pl-001-001BKsdr-wu4903990wuSDRWUwu.89071917132WU4903990WUWU20250617googlewu.890719171321907pdbibUS bib date1 < 1931WUWU20130801googlewu.890687859711907pdbibUS bib date1 < 1931