00910nam a2200241I 4500006588942MiAaHDL20150527000000.0m d cr bn ---auaua850427s1917 xx 000 0 eng 19011899sdr-nrlf.b12078094xsdr-nrlfGLAD255674-Bsdr-uiuc1941966sdr-nyp.b138314949GLADN255674DLCTXUCUYTN802.C6TN802.C6(OCoLC)3935235Coal Age.New ideas in coal mining;shortcuts and simple devices for getting improved and economical results in coal-mining work.Compiled from the regular issue of Coal Age.New York,1917.3 p., l., 153 p.illus., diagrs.24 cm.Mode of access: Internet.Coal mines and mining.00658894219140701000000.020150527000000.020181128115309.02018-12-09T19:23:29ZSDR-NRLFIII - MILLENIUMprepare.pl-004-008BKsdr-nrlf.b12078094xuc2SDRINRLFuc2.ark:/13960/t5r786z3xUC.b12078094xia.newideasincoalmi00coalrichia.newideasincoalmi00coalrichUCINRLF20181209iauc2.ark:/13960/t5r786z3x1917pdusbibnon-US bib date1 between 1901 and 1931UCNRLF20240731googleuc1.$b797831917pdusbibnon-US bib date1 between 1901 and 1931UIUUIUC20240625googleuiug.301121233948731917pdusbibnon-US bib date1 between 1901 and 1931NYPNYP20250610googlenyp.334330909190481917pdusbibnon-US bib date1 between 1901 and 1931