00797cam a2200229Ki 4500007069338MiAaHDL20090807000000.0m d cr bn ---auaua790507s1967 dcu f000 0 eng dsdr-pst.a2601991(OCoLC)4935232DODDODOCoLCUnited States.Bureau of Mines.Ringelmann smoke chart.[Washington] :U.S. Bureau of Mines,[1967]4 p. ;27 cm.Information circular - Bureau of Mines ;8333Revision of I. C. 7718: Kudlich, Rudolf. Rignelmann smoke chart. 1955.Mode of access: Internet.Smoke prevention.Kudlich, Rudolf.Ringelmann, Max,b. 1861.00706933820031104165348.020090807000000.020120815055805.02024-07-19T17:52:15Z2024-07-19T17:30:02ZSDR-PSTUNKNOWNloader.pl-001-001BKsdr-pst.a2601991pstSDRPSTpst.000045633676PSTno.8333a2601991PSTPST20240719googlepst.000045633676no.83331967pdbibUS fed doc