New and revised subject headings

A summary list of new and revised SCIS subject headings is provided in each issue of Connections. For the detailed lists of new and revised subject headings, see the quarterly subject heading lists.

In the summary lists, headings are marked with:

* Existing allowed headings which have been updated with changes to references or notes
A Headings which were previously USE references but are now headings in their own right
D Deleted headings
N New headings
U Previously allowed headings which have become USE references

Summary list

* Associations
* Biology
A Case studies
* Evolution
N Geography – Case studies
* Gravitation
* International agencies
* International organisation
* Matter
* Mechanics
N Non-government organisations
* Operas
D Savoy operas
N Small business management – Case studies
* Social casework
N Social welfare – Case studies
* Societies
* Variation (Biology)