Midcontinent oil and gas world
[1071-4790]
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Merged into:
Gulf Coast oil and gas world
[1070-4914]
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Merged into:
Northeast oil and gas world
[1070-4469]
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Merged into:
Pacific oil and gas world
[1071-9628]
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Merged into:
Southwest oil and gas world
[1071-4804]
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Merged into:
Western oil and gas world
[1070-6100]
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Merged into:
Hart's Oil and Gas World
[1075-5365]
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