TY  - BOOK
AU  - Maurer,William C.
TI  - Advanced drilling techniques
SN  - 0878141170
PY  - 1980///
CY  - Tulsa, OK
PB  - Petroleum Pub. Co
KW  - Rock
KW  - drills
KW  - Boring
N1  - Includes bibliographies and index
ER  -