TY  - BOOK
AU  - Wahlstrom,Ernest Eugene
TI  - Tunneling in rock
SN  - 0444410643
U1  - 624.19 
PY  - 1973///.
CY  - Amsterdam: , New York
PB  - Elsevier Scientific Pub. Co., 
KW  - Rock mechanics
KW  - Tunneling
N1  - Includes bibliographies
ER  -