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  • Oil wells
    ... Category:Drilling technology Category:Chinese inventions Category:Russian inventions Category:American inventions Category:Azerbaijani ...
    24 KB (3,859 words) - 12:20, 17 June 2015
  • Petroleum
    ... importance was due to the invention of the wikipedia:internal combustion ... at Shetland, it may be a Russian Export Blend delivered at the port of ...
    85 KB (11,867 words) - 14:29, 8 July 2015
  • Natural Gas
    ... A "master gas system" was invented in Saudi Arabia in the late ... php?storyId=99026745 title=Gazprom and Russian Foreign Policy publisher=Npr.org ...
    54 KB (8,199 words) - 14:09, 8 July 2015
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