Subfield ‡e (relator code):
Use relator codes as appropriate.
Precede subfield ‡e (relator term) by a comma, unless the authorized access point ends in an open date.
Examples:
700 1_ ‡a Hogarth, William, ‡d 1697-1764, ‡e artist.
700 1_ ‡a Smith, R. D., ‡d 1949- ‡e photographer.