TY  - BOOK
AU  - LEROY, L. W. Y OTROS
TI  - GEOLOGY SUBSURFACE: PETROLEUM MINING CONSTRUCTION
T2  - 0
U1  - 550 
PY  - 1977///
CY  - GOLDE COLORADO-U.S.A.
PB  - COLORADO SCHOOL OF MINES
KW  - CIENCIAS PURAS
N1  - LABORATORY-PETROLEUM/GEOLOGY-INVESTIGATION
ER  -