UDC: Common Auxiliaries

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## Main numbers

## Outline of the UDC
Common Auxiliaries

Table | 1a | Co-ordination. Addition
| 1b | Relation. Subgrouping. Order-fixing
| 1c | Common auxiliaries of language
| 1d | Common auxiliaries of form
| 1e | Common auxiliaries of place
| 1f | Common auxiliaries of ethnic grouping and nationality
| 1g | Common auxiliaries of time
| 1h | Specification by non-UDC notation (e.g. 1/9, A/Z)
| 1k | Common auxiliaries of properties materials relations, processes and operations persons and personal characteristics

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