X82 - Chronological Subdivisions-General Information
MARC 21 Authority
October 2009
"Full" documentation refers to the MARC
21 Format for Authority Data that contains detailed
descriptions of every data element, along with examples,
input conventions and history sections.
"Concise" documentation refers to the
MARC 21 Concise Format for Authority Data that
contains abridged descriptions of every data element, along
with examples.
182 - Heading - Chronological Subdivision
(NR)
Full |
Concise
482 - See From Tracing - Chronological
Subdivision (R)
Full |
Concise
582 - See Also From Tracing - Chronological
Subdivision (R)
Full |
Concise
782 - Established Heading Linking Entry -
Chronological Subdivision (R)
Full |
Concise
First Indicator
Undefined
# - Undefined
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Second Indicator
182/482/582 - Undefined
# - Undefined
782 - Thesaurus
0 - Library of Congress Subject Headings
1 - LC subject headings for children's literature
2 - Medical Subject Headings
3 - National Agricultural Library subject authority
file
4 - Source not specified
5 - Canadian Subject Headings
6 - Répertoire de vedettes-matière
7 - Source specified in subfield $2 |
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Subfield Codes
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Subject subdivision portion
$v - Form subdivision (R)
$x - General subdivision (R)
$y - Chronological subdivision (R)
$z - Geographic subdivision (R)
Tracing and linking subfields
$i - Relationship information
(R) [482/582] |
$w - Control subfield (NR) [482/582/782]
$0 - Record control number (R) [582/782]
$2 - Source of heading or term (NR) [782]
$4 - Relationship code (R)
[482/582]
$5 - Institution to which field applies (R)
[482/582/782]
$6 - Linkage (NR)
$8 - Field link and sequence number (R) |
GUIDELINES FOR APPLYING CONTENT DESIGNATORS
Content designators identify the subelements occurring in
chronological subdivision headings constructed according to
generally accepted thesaurus-building conventions (e.g.,
Library of Congress Subject Headings, Medical Subject
Headings). A chronological subdivision is used as a
subdivision portion of an extended subject or index term access
field in bibliographic records. A chronological term that is
used as the lead element of an established heading record is
contained in a 150 (Heading-Topical Term) field.
Only generally-applicable content designators are described
in full in this section. A small number of content designators
with field-specific instructions are described in the
Tracings and References-General
Information section (for field 482 and 582) and the
7XX Heading Linking Entries-General
Information section (for field 782).
■ INDICATORS
First Indicator - Undefined
Undefined and contains a blank (#).
Second Indicator
In fields 182, 482, and 582, the second indicator position
is undefined and contains a blank (#). For field 782, the
second indicator position contains one of the values
described in the
7XX Heading
Linking Entries-General Information section.
■ SUBFIELD CODES
$i - Relationship
information [482/582]
Designation of a relationship of the
entity in a 482 or 582 field to the 1XX entity in the
record or a textual reference instruction phrase than those
that may be system-generated from the field tag or from the
codes defined for subfield $w (Control subfield). Subfield
$i is appropriate only in fields 482 and 582. Guidelines
for using subfield $i are provided in the Tracings and References-General
Information section.
$v - Form subdivision
Designates a specific kind or genre of material as defined
by the thesaurus being used. Subfield $v is appropriate in
an X82 field only when a form subject subdivision is added
to a chronological subdivision to form an extended
subdivision heading.
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| 182 |
##$y1981-$vPeriodicals |
$w - Control subfield [482/582/782]
Codes in one or more character positions defined to control
the display of information and specify relationships,
restrictions, and status. Subfield $w is appropriate only
in field 482, 582, and 782. Character position definitions
and guidelines for applying the codes defined for subfield
$w in field 482 and 582 are provided in the Tracings
and References-General Information section. Character
position definitions and guidelines for field 782 are in
the 7XX Heading Linking Entries-General
Information section.
$x - General subdivision
Topical or language subdivision term. Subfield $x is
appropriate in an X82 field only when a general subdivision
is added to a chronological subdivision to form an extended
subdivision heading.
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| 182 |
##$y1981-$xFrench |
| 182 |
##$yEarly
modern, 1500-1700$xHistory and criticism |
$y - Chronological subdivision
Subdivision term that represents a period of time.
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| 182 |
##$yTo
1500 |
| 182 |
##$y18th
century |
| 182 |
##$yEarly
church, ca. 30-600 |
| 182 |
##$yGreat
War, 1843-1852 |
$z - Geographic subdivision
Appropriate in an X82 field only when a geographic
subdivision is added to a chronological subdivision to form
an extended subdivision heading.
$0 - Record control number
[582/782]
$2 - Source of heading or term
[782]
Code that identifies the source of a heading or term when
the second indicator position contains value 7. Subfield $2
is appropriate only in field 782. Guidelines for applying
subfield $2 are provided in the
7XX Heading Linking Entries-General
Information section.
$4 - Relationship code [482/582]
Contains in coded form the
designation of a
relationship of the entity in a 482 or 582 field to
the 1XX entity in the record. Guidelines for using subfield
$4 are provided in the
Tracings and References-General
Information section.
$5 - Institution to which field
applies[482/582/782]
$8 - Field link and sequence number
INPUT CONVENTIONS
Punctuation - Punctuation of the subelements
of a heading is generally dictated by subject heading
system/thesaurus rules. These input conventions clarify MARC
punctuation practices. An X82 field does not end with a mark
of punctuation unless the field ends with an abbreviation, an
initialism, or data that ends with a mark of punctuation.
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| 182 |
##$yTo 221
B.C. |
| 182 |
##$y1981- |
Spacing - No spaces are used in initialisms.
One space is used between the final period of an abbreviated
term and a word or numeral that follows.
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| 182 |
##$yEarly
church, ca. 30-600 |
Display Constant
| - |
[dash
associated with the content of subfield $v, $x, $y, and
$z] |
Dash (-) that precedes a subject subdivision heading is
not carried in the MARC record. It may be system generated as
a display constant associated with the content of subfield
$v, $x, $y, and $z.
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Content designated field:
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| 182 |
##$y18th
century |
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Display example:
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18th century
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CONTENT DESIGNATOR HISTORY
$i - Relationship information
[482/582] [REDEFINED, 2009]
$3 - Authority record control number [OBSOLETE, 1997]
[CAN/MARC only]
$4 - Relationship code [482/582]
[NEW, 2009]