X85 - Form Subdivisions-General Information
MARC 21 Authority
October 2002
"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.
485 - See From Tracing - Form Subdivision (R)
Full |
Concise
585 - See Also From Tracing - Form Subdivision (R)
Full |
Concise
785 - Established Heading Linking Entry - Form Subdivision (R)
Full |
Concise
First Indicator
Undefined
# - Undefined
|
Second Indicator
185/485/585
-
Undefined
# - Undefined
785
-
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 |
|
|
Subfield Codes
|
Tracing and linking subfields
$i - Reference instruction phrase (NR) [485/585]
$w - Control subfield (NR) [485/585/785]
$0 - Record control number (R) [585/785]
$2 - Source of heading or term (NR) [785]
$5 - Institution to which field applies (R) [485/585/785]
$6 - Linkage (NR)
$8 - Field link and sequence number (R)
| Subject subdivision portion
$v - Form subdivision (R)
$x - General subdivision (R)
$y - Chronological subdivision (R)
$z - Geographic subdivision (R)
|
GUIDELINES FOR APPLYING CONTENT DESIGNATORS
Content designators identify the subelements occurring in form subdivision headings
constructed according to generally accepted thesaurus-building conventions (e.g.,
Medical Subject Headings). A form subdivision is used as a subdivision
portion of an extended subject or index term access field in bibliographic records. A
form term that is used as the lead element of an established heading record is contained
in a 155 (Heading-Genre/Form 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 485 and 585)
and the 7XX Heading Linking Entries-General Information section (for field
785).
■ INDICATORS
First Indicator - Undefined Undefined and contains a blank (#).
Second Indicator In fields 185, 485, and 585, the second indicator position is undefined and
contains a blank (#). For field 785, the second indicator position contains one of
the values described in the
7XX Heading Linking Entries-General
Information section.
■ SUBFIELD CODES
$i - Reference instruction phrase [485/585]Reference instruction phrase other 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 field 485 and 585. Guidelines for applying
subfield $i are provided in the Tracings and References-General
Information section.
$v - Form subdivision Designates a specific kind or genre of material as defined by the thesaurus being
used.
|
|
|
|
|
|
|
|
|
|
| 185 |
##$vFiction |
| 185 |
##$vAbbreviations |
| 185 |
##$vIndexes$vPeriodicals |
|
|
|
|
|
|
|
|
|
|
| 040 |
##$aDNLM$cDNLM |
| 185 |
##$vcase studies$vsoftware |
$w - Control subfield [485/585/785]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 485, 585, and 785. Character position definitions and
guidelines for applying the codes defined for subfield $w in field 485 and 585 are
provided in the Tracings and References-General Information section.
Character position definitions and guidelines for field 785 are in the 7XX
Heading Linking Entries-General Information section.
$x - General subdivision Topical or language subdivision term. Subfield $x is appropriate in an X85 field
only when a general subdivision is added to a form subdivision to form an extended
subdivision heading.
|
|
|
|
|
|
|
|
|
|
| 185 |
##$vDictionaries$xSpanish |
$y - Chronological subdivision Subdivision term that represents a period of time. Subfield $y is appropriate in
an X83 field only when a chronological subdivision is added to a form subdivision
to form an extended subdivision heading.
$z - Geographic subdivision Appropriate in an X85 field only when a geographic subdivision is added to a form
subdivision to form an extended subdivision heading.
|
|
|
|
|
|
|
|
|
|
| 185 |
##$vCatalogs and collections$zUnited States |
$0 - Record control number [585/785]
$2 - Source of heading or term [785]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 785.
Guidelines for applying subfield $2 are provided in the
7XX Heading Linking
Entries—General Information section.
$5 - Institution to which field applies [485/585/785]
$8 - Field link and sequence number
INPUT CONVENTIONS
Punctuation - Punctuation of the subelements of a heading is generally dictated by subject heading
system/thesaurus rules. These input conventions clarify MARC punctuation practices. An
X85 field does not end with a mark of punctuation unless the field ends with an
abbreviation, an initialism, or data that ends with a mark of punctuation.
Spacing - No spaces are used in initialisms.
|
|
|
|
|
|
|
|
|
|
| 185 |
##$vPeriodicals$zNew York (N.Y.) |
One space is used between the final period of an abbreviated term and a word or numeral
that follows.
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.
Use of subfields $v, $x, $y, and $z in LCSH - For terms from Library of Congress Subject Headings, subfield $v (Form
subdivision), subfield $x (General subdivision), subfield $y (Chronological
subdivision), and subfield $z (Geographic subdivision) are unlikely to be used in
conjunction with a primary term in an X85 field, since a form subdivision would
generally not be followed by another subdivision when it is functioning as a form.