00956nam a2200265I 4500006510311MiAaHDL20150527000000.0m d cr bn ---auaua850212s1869 pau 000 0 eng 38021946sdr-nrlf.b124084400GLADN17050812DLCOCPCUYQA111.O76 1869QA111.O7 1869(OCoLC)3164388Orton, Hoy D.Orton's Lightning calculator, and accountant's assistant.By Hoy D. Orton.Entirely new ed.,with extensive modifications and improvements.Philadelphia,T. K.Collins,1869.vi, [9]-194 p.18 cm.Mode of access: Internet.Ready-reckoners.Lightning calculator.00651031119140701000000.020150527000000.020181128115309.02018-12-07T20:36:53ZSDR-NRLFIII - MILLENIUMprepare.pl-004-008BKsdr-nrlf.b124084400uc2SDRINRLFuc2.ark:/13960/t21c1x55nUC.b124084400ia.ortonslightningc00ortorichia.ortonslightningc00ortorichUCINRLF20181207iauc2.ark:/13960/t21c1x55n1869pdbibUS bib date1 < 1931