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обязательное социальное обеспечение (NACE v. 2 Section O: Public administration and defence; compulsory social security (NACE is the "statistical classification of economic activities in the European Community")  europa.eu Sjoe!) | |||
| compulsory social security: 4 短语, 2 学科 |
| 一般 | 1 |
| 行业分类 | 3 |