00495nas a22001811 4500000863511MiAaHDL20100825000000.0m d cr bn ---auaua820823 19579999xx uu 0 0eng dsdr-pst.a94186sdr-miu.990008635110106381(OCoLC)14232797LIAS227717PStPStWaOLNSecurity Research Bureau, inc.Comparisons of certain railroad indicators.Philadelphia.1957-Cover title.Mode of access: Internet.RailroadsUnited StatesStatistics.00086351120100825000000.020120815062653.02025-02-26T18:47:10ZSDR-PSTUNKNOWNloader.pl-001-001SEsdr-pst.a94186pstSDRPSTpst.000055428903PST1957a94186PSTPST20250226googlepst.00005542890319571957icbibnon-US serial item date >= 1931PSTPST20260113googlepst.00005542891019581958icbibnon-US serial item date >= 1931MIUMIU20260306googlemdp.3901502092768019611961icbibnon-US serial item date >= 1931