TY  - BOOK
AU  - Greenwood Marjorie 
TI  - Railway Revolution 1825-1845 
SN  - THEN AND THERE
U1  - 926 2 GRE NO 6 
PY  - 1955///
CY  - London 
PB  -  Longmans
KW  - RAILROADS ENGINEERS
ER  -