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UDC Consortium, PO Box 90407, 2509 LK
The Hague, The Netherlands |
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Main
numbers
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| -051 | Persons as agents, doers, practitioners (studying, making, serving) |
| -052 | Persons as targets, clients, users (studied, served etc.) |
| -053 | Persons according to age or age groups |
| -054 | Persons according to ethnic characteristics, nationality, citizenship, etc. |
| -055 | Persons according to sex and kinship |
| -056 | Persons according to constitution, health, disposition, hereditary or other traits |
| -057 | Persons according to occupation, work, livelihood, education |
| -058 | Persons according to social class, civil status |
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