23.4D. Places in the British Isles
Existing Headings:
When changing the qualifier on a heading that was coded for AACR2 before April 1988, trace a see reference from the previous AACR2 form. Code the reference "e," to indicate that it was an earlier established form of heading., Retain a reference from the pre-AACR2 form if there is one.
See also: