686 - Relationship to Source Note (R)
MARC 21 Classification - Concise
2007
This is an ARCHIVED VERSION of the
2007 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 relationship of a number to the source
edition when the number is different from the standard number
for the same topic in the primary source edition. This field is
used for numbers based on a source other than the primary
source, expansions, implemented options, and adaptations. The
information in this field is intended primarily for computer
processing or to guide classifiers and is often not written in
a form adequate for public user display.
Indicators
First - Type of relationship
0 - Number from other source edition
1 - Expansion
2 - Option
3 - Adaptation, other
Second - Undefined
# - Undefined
Subfield Codes
$a - Number in edition described in field 084--single number
or beginning number of span (R)
Classification number in the edition described in field 084
for the topic identified in subfield $t.
$b - Number in primary source edition--single number or
beginning number of span (R)
Standard number in the primary source edition for the topic
identified in subfield $t, or if there is no subfield $t,
then in subfield $j or field 153.
$c - Ending number of span (R)
$i - Explanatory text (R)
Explains the scope of the classification number. This
subfield is repeated when other subfields intervene in the
explanatory text.
$o - Number where instructions are found--single number or
beginning number of span (R)
Number in the source edition where instructions are given
for the option that is being implemented in the number in
field 153. The subfield is used only for an option
described in the primary source edition or another source
edition (indicator value 2).
$t - Topic (R)
Topic that is being added to or subtracted from the meaning
of the number in field 153.
$z - Table identification (R)
$2 - Edition identifier (R)
Edition number, date, or other textual designation of the
classification scheme edition used as the source for the
classification number in field 153 when that source is not
the primary source.
$5 - Institution to which field applies (R)
$8 - Field link and sequence number (NR)
Examples
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686 |
3#$tComprehensive works
and European portion of Istanbul
province$z2$b49618 |
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686 |
3#$tAsian portion of
Istanbul
province$z2$b563 |
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