453 - Invalid Number Tracing (R)
MARC 21 Classification - Concise
2008
This is an ARCHIVED VERSION of the
2008 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.
Tracing for a cross reference from an invalid classification
number.
Indicators
First - Source of classification number
0 - Schedule
1 - Table
Second - Undefined
# - Undefined
Subfield Codes
$a - Classification number element--single number or
beginning number of span (R)
$c - Classification number element--ending number of span (R)
$h - Caption hierarchy (R)
Caption for each higher level of the caption hierarchy that
precedes the caption for a classification number or span
that is contained in subfield $j (Caption). The caption at
the highest level is recorded in the first subfield $h. The
caption at each successive level is recorded in sequence in
separate subfields $h up to and including the level that
precedes the caption contained in subfield $j. Captions for
all levels of the hierarchy are recorded in the field. If
the caption in subfield $j is the highest level of the
hierarchy, subfield $h is not used. (However, some systems
may wish to omit some levels of the hierarchy for display
purposes.) A caption hierarchy for classification numbers
in a summary number span in the Dewey Decimal
Classification is contained in subfield $k (Summary
number span caption hierarchy).
$i - Reference instruction phrase (NR)
$j - Caption (NR)
Lowest caption in the caption hierarchy for a
classification number or span.
$k - Summary number span caption hierarchy (R)
Caption at a level higher than the last for a summary
number span when the classification scheme identified in
field 084 (Classification Scheme and Edition) is the
Dewey Decimal Classification. Caption hierarchies
for single classification numbers, defined numbers spans,
or other types of summary number spans are contained in
subfield $h. The last caption in the caption hierarchy for
a summary number span in field 153 (008/07, Type of number,
code c for summary number span) is recorded in subfield $j.
$t - Topic (NR)
Topic to which the tracing applies.
$w - Control subfield (NR)
/0 - Special relationship
/1 - Hierarchical relationship
/2 - Reference display
/3 - History reference
$y - Table sequence number for internal subarrangement or add
table (R)
$z - Table identification (R)
$8 - Field link and sequence number (R)
Examples
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453 |
0#$wj$aH61.5
$hSocial Science
(General)$hTheory. Method. Relation to
other subjects$jStatistical methods |
453 |
0#$wj$aNA3640.52
$hArchitecture$hArchitectural
decoration$jPainted decoration (Color
use) |
453 |
0#$wmnna$a621.3883320288
$hTechnology (Applied
sciences)$hEngineering and allied
operations$hApplied
physics$hElectrical, magnetic, optical,
communications, computer engineering; electronics,
lighting$hElectronics, communications
engineering$kSpecific communications
systems$hTelevision$hComponents
and devices$hVideorecorders and
videorecordings$hMiscellany$hAuxiliary
techniques and procedures; apparatus, equipment,
materials$jMaintenance and repair |
453 |
1#$wm$z4
$a0148$hSubdivisions of
Individual Languages and Language
Families$hPhilosophy and
theory$hLanguage and
communication$jAbbreviations and
symbols$tabbreviations and symbols as
part of writing systems |
453 |
0#$wm$a130.112
$h##$a133.3$hPhilosophy,
parapsychology and occultism,
psychology$hParapsychology and
occultism$hPhilosophy and
theory$hSystems$jForecasting
and forecasts$tcomprehensive works on
parapsychological and occult forecasting and
forecasts |
453 |
00$wj$aHD1501.2
$hIndustries. Land use.
Labor$hAgricultural
economics$jLandlord |
453 |
1#$wanna$z2
$a71335$hGeographic Areas,
Historical Periods, Persons$kSpecific
continents, countries, localities; extraterrestrial
worlds$kThe modern world;
extraterrestrial worlds$hNorth
America$hCanada$hOntario
$kSouthern Ontario$hLake Erie
region$jSt. Thomas |
453 |
0#$wanna$a652.5
$hTechnology (Applied
sciences)$hManagement and auxiliary
sciences$kAuxiliary
services$hProcesses of written
communication$jWord processing |