| appea.com.au | Australian Petroleum Production and Exploration Association |
| aie.org.au | The Australian Institute of Energy |
| caodc.ca | Canadian Association of Oilwell Drilling Contractors |
| apia.net.au | Australian Pipeline Industry Association (APIA) |
| canadiangaspotential.com | Canadian Gas Potential Committee |
| arab-oil-gas.com | Arab Petroleum Research Center |
| afgaz.fr | AFG ( Association Française du Gaz ) |
| afes.org.uk | Aberdeen Formation Evaluation Society UK |
| aboriginalpipeline.ca | Aboriginal Pipeline Group |
| worldlpgas.com | World LP Gas Association |
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