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| Avalon Exploration | An independent oil and gas operating company based in Tulsa,OK founded in 1982. |
| Echolist Directory | The Echolist online directory features a massive wealth of information, news and links about a wide range of topics for your edification. See 'Business/Energy and Evironment/ Oil and Gas' |
| Marjo Operating | An independent oil and gas operating company based in Tulsa,Oklahoma. |
| PDS CDEX | Provides audited crude oil pricing data to the oil industry. |