TY  - BOOK
AU  - Proctor,Robert V.
AU  - White,Thomas L.
AU  - Terzaghi,Karl
TI  - Rock tunneling with steel supports
U1  - 624.19 
PY  - 1977///
CY  - Youngstown, Ohio
PB  - Commercial Shearing
KW  - Tunneling
KW  - Geology, structural
N1  - Bibliography: page 99
ER  -