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classified catalog code | |||
classified encoding | |||
sorting code number | |||
classification and coding | |||
categorization code |
分类编 码 : 21 phrases in 12 subjects |
Aviation | 1 |
Business | 2 |
Economy | 2 |
Electronics | 2 |
Information technology | 2 |
International Monetary Fund | 1 |
Logistics | 1 |
Management | 1 |
Mathematics | 1 |
Name of organization | 2 |
Space | 3 |
Technology | 3 |