C
C5 Process Validation For Biological Production
www.c5-online.com/china
D
Doris Engineering
www.doris-engineering.com
F
H
Halliburton Energy Services
www.halliburton.com
Hughes Christensen
www.bakerhughes.com
I
Industrial Rubber, Inc. Oil Tool Division
www.iri-oiltool.com
L
O
Oil & Gas Asset Clearinghouse
www.ogclearinghouse.com
Oil & Gas Journal Online Research
www.ogjresearch.com
P
Petroleum Place Energy Advisors
www.p2ea.com
PennWell Corporation Book
www.pennwellbooks.com
R
Rough Creek Lodge
www.roughcreek.com
S
Siemens AG I&S GC MC
www.siemens.com/oil-gas
Society of Petroleum Engineers
www.otcnet.org/2005
