慶應義塾大学 商学部・商学研究科
新保一成 研究室
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NIC 1998 - code 11
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
112
- Service activities incidental to oil and gas extraction excluding surveying
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NIC@MOSPI