MECHANICAL - INCREMENTAL INNOVATION Competition continues to push railroads to press harder for heavier, more efficient cars. Car builders continue to answer the call
Progressive railroading ; 42 , 2
1999
Aufsatz (Zeitschrift)
Unbekannt
Relations of locomotive builders and the railroads
Engineering Index Backfile | 1930
|Heavier loading of freight cars
Engineering Index Backfile | 1929