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This category has the following 2 subcategories, out of 2 total.
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71:Oil-fired power stations in Northern Ireland
51:Oil and gas companies of Northern Ireland
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96:Fossil fuels in Northern Ireland
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106:Petroleum in the United Kingdom
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26:Energy portal
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90:Categories
75:(1 P)
55:(3 P)
92::
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64:P
44:C
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