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 142

Structure

Hierarchy

  • Section: C - Mining and quarrying
  • Divsion: 14 - Other mining and quarrying
  • Group: 142 - Mining and quarrying, n.e.c.

Class

  • 1421 - Mining of chemical and fertilizer minerals
  • 1422 - Extraction of salt

Links