TY  - BOOK
AU  - Stauffer, David Mcneely
TI  - Modern tunnel practice: Illustrated by examples taken from actual recent work in the united states and in foreign countries 
AV  - TF23 S8 1906a
PY  - 1906///
CY  - London
PB  - A. Constable
KW  - Túneles
ER  -