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  • [[429]]: [[Zu Chongzhi]], a prominent Chinese mathematician during the [[Southern
    303 bytes (36 words) - 02:40, 29 October 2010
  • ...o calculation, at least 10 to 15 billion tons of oil together with 85.8 to 429 billion cubic meters of natural gas are deposited. In the main, the economy
    11 KB (1,756 words) - 08:28, 13 July 2009