# ISO 1951:1973 — Withdrawn and superseded ISO standards

For ISO 1951:1973, item title is Lexicographical symbols particularly for use in classified defining vocabularies; status code is 9599; successor is ISO 1951:1997; withdrawn / published date is 1973-11-01, recorded from its source on 2026-08-05.

- **Identifier:** ISO 1951:1973 _(verified: appears in the quote below)_
- **Item title:** Lexicographical symbols particularly for use in classified defining vocabularies _(verified: appears in the quote below)_
- **Status code:** 9599 _(verified: appears in the quote below)_
- **Successor:** ISO 1951:1997
- **Withdrawn / published date:** 1973-11-01 _(verified: appears in the quote below)_

## What the source says

> 6677,IS,,ISO 1951:1973,Lexicographical symbols particularly for use in classified defining vocabularies,Symboles lexicographiques particulièrement pour l'emploi dans les vocabulaires systématiques à définitions,1973-11-01,1,['01.020'],ISO/TC 37,9599,,[6678],"['en','fr']",30,

## Source

- https://isopublicstorageprod.blob.core.windows.net/opendata/_latest/iso_deliverables_metadata/csv/iso_deliverables_metadata.csv

Last verified: 2026-08-05. Review by: 2027-02-01.
Part of [Withdrawn and superseded ISO standards](https://referencesource.org/iso-standard-supersessions/).