TY  - BOOK
AU  - Azar, J.C.
AU  - Samuel, G.R.
TI  - Drilling engineering
SN  - 9781593700720
AV  - TN 871.2 .A92
PY  - 2007///
CY  - Oklahoma
PB  - Pennwell
KW  - Oil well Drilling, Gas well Drilling
ER  -