TY  - BOOK
AU  - Allen,C.Frank
TI  - Railroad curves and earthwork
PY  - 1931///
CY  - New York, London
PB  - McGraw-Hill Book Company, inc.
KW  - CAMINOS
KW  - FERROCARRILES
KW  - CURVAS
KW  - MOVIMIENTO DE TIERRAS
ER  -