TY  - BOOK
AU  - Berg, Walter Gilman,
TI  - Buildings and structures of american railroads: A reference book for railroad managers, superintendents, master mechanics, engineers, architects and students 
AV  - TF270 B47
PY  - 1907///
CY  - New York, London
PB  - J. Wiley, Chapman and Hall
KW  - Ferrocarriles
KW  - Edificios y estructuras
ER  -