TY  - DATA
ED  - Petroleum Technology Transfer Council, PTTC
TI  - Hard rock directional drilling provessuccessful
PY  - 2003///
CY  - Houston
PB  - Petroleum Technology Transfer Council, PTTC
KW  - Perforación direccional
UR  - http://www.pttc.org/solutions/14.pdf
ER  -