00675nam0 2200229 450 00002553420190319154836.020090504d1932----km-y0itay50------baengUSy-------001yyAmerican railroadsfour phases of their historyPrincetonPrinceton University Press1932120 p.22 cmAmerican railroads44285385.0920Daniels,Winthrop More633406ITUNIPARTHENOPE20090504RICAUNIMARC000025534DEP V-0086s. i.NAVA42009American railroads44285UNIPARTHENOPE