TY  - BOOK
AU  - Webb, Walter Loring
TI  - Railroad construction: theory and practice, a text-book for the use of students in colleges and technical schools, and office 
AV  - TF 200 W4.1935
PY  - 1935///
CY  - New York
PB  - John Wiley
KW  - Ferrocarriles -
KW  - Construcción
ER  -