U.S. Energy Information Administration. Review of emerging resources , U.S. shale gas and shale oil plays.
Citace podle Chicago (17th ed.)U.S. Energy Information Administration. Review of Emerging Resources , U.S. Shale Gas and Shale Oil Plays.
Citace podle MLA (9th ed.)U.S. Energy Information Administration. Review of Emerging Resources , U.S. Shale Gas and Shale Oil Plays.
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