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Petroleum (view source)

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+Interesting link, -some TAR

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~~[[Category:Geology]]~~

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==External links==

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[http://elsegundo.chevron.com/abouttherefinery/whatwedo/whatisinabarrelofoil.aspx "What is in a Barrel of Oil?"]

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[[Category:Geology]]

[[Category:Energy]]

[[Category:Fuels]]

[[Category:Investments in Tangibles]]

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~~[[Category:Investments]]~~

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~~[[Category:Survivalism]]~~

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~~[[Category:Transportation]]~~

[[Category:Economics]]

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~~[[Category:Systems of Support]]~~

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