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Concise Formats - 2009/2010 Archive >> Classification >> 6XX >> 685

685 - History Note (R)

MARC 21 Classification - Concise
2008

This is an ARCHIVED VERSION of the 2009/2010 electronic edition of the MARC 21 Concise Formats. Please see loc.gov/marc/concise/ for the most up-to-date version of the electronic MARC 21 Concise Formats.

Information about the history of the use and meaning of a classification number that is contained either in field 153 (Classification Number) unless a 453 (Invalid Number Tracing) or 553 (Valid Number Tracing) field contains code a (History reference, field 685 used) in control subfield $w/3 (History reference).

Indicators
First - Result of change
0 - Completely new number
1 - Completely vacated number
2 - Partially changed number
3 - Reused after being vacated
4 - Immediately reused
8 - Other
Second - Type of history information
0 - Relocation
1 - Formerly
2 - Discontinuation
3 - Expansion
8 - Other
Subfield Codes
$a - New number-single number or beginning number of span (R)
Used to amplify the explanatory text of the note.
$b - Previous number-single number or beginning number of span (R)
Old number from which the topic has been moved. If the old number is the same as the number in field 153, 453, or 553, this subfield is not used.
$c - Classification number-ending number of span (R)
$d - Date of implementation at authoritative agency (NR)
$e - Local implementation date (NR)
$f - Title and publication date (NR)
Code or a title and publication date string that identifies the source where the classification number change first appeared if the change occurred in other than a published edition identified in subfield $2 (Edition number). The field may also contain a volume and number if appropriate, following the title and publication date or coded data.
$i - Explanatory text (R)
Explains the scope of the classification number. This subfield is repeated when other subfields intervene in the explanatory text.
$t - Topic (R)
Topic that is being added to or subtracted from the meaning of the number in field 153, 453, or 553 of this or another record.
$y - Table sequence number for internal subarrangement or add table (R)
$z - Table identification (R)
$2 - Edition number (R)
$5 - Institution to which field applies (R)
See the description of this subfield in Appendix A: Control Subfields.
$6 - Linkage (NR)
See the description of this subfield in Appendix A: Control Subfields.
$8 - Field link and sequence number (NR)
See the description of this subfield in Appendix A: Control Subfields.
Examples
685 01$tMultimedia systems, interactive video, comprehensive works on computer graphics and computer sound synthesis$iall formerly located in$a006.6$d19960930 $221
685 12$iProvision discontinued because without meaning in context$d19960930$221
685 22$iUse of this number for$tcooperation$idiscontinued; class in$a158$d19960930 $221
685 10$tCritical appraisal of a person's work$irelocated to$z1$a092$d19650501 $217
685 31$tMen$iformerly located in$z1$b088041$d19890306 $220
685 41$tYiddish$iformerly located in$b437.947$d19960930 $221
685 42$iUse of this number for$tcomprehensive works on Old Low Germanic languages$idiscontinued; class in$a439$d19960930 $221
685 40$tOld Frisian$irelocated to$a439.2$d19960930 $221
685 88$iThis schedule is extensively revised, 370.1, 370.7, 375-377, and 378.14-378.19 in particular departing from earlier editions. A comparative table giving both old and new numbers for relocated topics, and equivalence tables showing the numbers in the old and new schedules appear in volume 1 of this edition$d19960930$221
685 03$iExpanded from$a796.324$tNetball $d19960930$221
685 88$iExcept for military science (355-359), this schedule is new and has been prepared with little or no reference to previous editions. Most numbers have been reused with new meanings. A comparative table giving both old and new numbers for a substantial list of topics and equivalence tables showing the numbers in the old and new schedules appear in volume 1 of this edition$d19960930$221
685 01$tData processing. Computer science$iformerly located in$b001.6$d19850501 $fDDC 004-006, data processing and computer science and changes in related disciplines, 1985$219
685 03$tSocialization by the family$d19820315$fDDC 301-307, sociology, 1982$219
685 01$tQuantum electrodynamics$iformerly located in$b537.67$d19990901 $fNew and Changed Entries, September 1999$221
685 20$tPopulation size and composition$irelocated to$a304.6$d19960930 $221
685 01$tHainan Province (Hainan Sheng)$iformerly located in$z2$b5127$d19910501 $220
Concise Formats - 2009/2010 Archive >> Classification >> 6XX >> 685

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