The CERL thesaurus record identification number is a unique identifier. The identifier consists of a three letter prefix, indicating the type of entity described and a 8 digit number.
This field does not have indicators or subfields.
Currently, the following prefixes are used:
| cni | CERL nomen imprimatoris etc. (Printers, Publishers, Booksellers etc.) |
| cnc | CERL nomen corporationis (Corporate bodies) |
| cnl | CERL nomen loci (Places) |
| cnp | CERL nomen personae (Persons) |
{"_id": "Record identifier (001)"}