TY  - BOOK
AU  - Richardson,Harold W.
AU  - Mayo,R.S.
TI  - Practical tunnel driving,
U1  - 624.193 
PY  - 1941///
CY  - New York, London
PB  - McGraw-Hill Book Company, inc.
KW  - Tunneling
KW  - MCE
N1  - Table on lining-paper
ER  -