慶應義塾大学 商学部・商学研究科

新保一成 研究室

開発と環境の経済分析...

NIC 1998 - code 111

Structure

Hierarchy

  • Section: C - Mining and quarrying
  • Divsion: 11 - Extraction of crude petroleum and natural gas; service activities incidental to oil and gas extraction excluding surveying
  • Group: 111 - Extraction of crude petroleum and natural gas

Class

  • 1110 - Extraction of crude petroleum and natural gas

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