Indicates the staff member responsible for action taken on a bibliographic
record (subfield $a), the date of the action (subfield $b)
and the type of action taken (subfield $c).
The staff member's initials are entered in subfield $a followed by a one-letter
code for the type of action taken and the date in coded form
«Y³Û³Û³Û²Ñ²Ñ¶Ù¶Ù».
The date is also entered in subfield $b in
coded form «Y³Û³Û³Û²Ñ²Ñ¶Ù¶Ù».
The one-letter code for the action taken is entered in
subfield $c.
Examples:
999 $a vhc20020905 $b 20020905 $c c
[record created on 5 Sept. 2002 by V.H.]
999 $a mgu20020905 $b 20020905 $c u
[record updated on 5 Sept. 2002 by M.G.]
999 $a mpr20020905 $b 20020905 $c r
[record revised on 5 Sept. 2002 by M.P.]
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