Petroliwm: Gwahaniaeth rhwng fersiynau
Cynnwys wedi'i ddileu Cynnwys wedi'i ychwanegu
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Rescuing 1 sources and tagging 0 as dead.) #IABot (v2.0.8 |
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Ffynhonnell: [http://tonto.eia.doe.gov/country/index.cfm U.S. Gweinyddiaeth dros Wybodaeth am Ynni, UDA] {{Webarchive|url=https://web.archive.org/web/20080710145353/http://tonto.eia.doe.gov/country/index.cfm |date=2008-07-10 }}
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