TY  - BOOK
AU  - LeRoy,L.W.
TI  - Surface geology: petroleum mining construction 
SN  - 0918062004
PY  - 1977///
CY  - Golden, Colorado
PB  - Colorado School of Mines
KW  - Petroleum
KW  - Geology
KW  - Addresses, essays, lectures
KW  - Mining geology
KW  - Engineering geology
N1  - Bibliography : p. 919-934
ER  -