APA Style
United States. Department of the Interior, Washington, DC.. ().
Geologic Studies of Deep Natural Gas Resources.[computer file]. .
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Chicago Style
United States. Department of the Interior, Washington, DC..
Geologic Studies of Deep Natural Gas Resources.[computer file]..
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MLA Style
United States. Department of the Interior, Washington, DC..
Geologic Studies of Deep Natural Gas Resources.[computer file]..
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.
Turabian Style
United States. Department of the Interior, Washington, DC..
Geologic Studies of Deep Natural Gas Resources.[computer file]..
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,
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.