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Petroleum (view source)

2 bytes added , 19:11, April 21, 2017

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

[[Category:Geology]]

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