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18 Jul 15
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if a tag can appear more than once in one bibliographic record, it is labeled repeatable (R).
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And it is possible that a 2nd indicator will be used, while the 1st indicator remains undefined (or vice versa). When an indicator is undefined, the character position will be represented by the character # (for blank space)
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every field MUST have a subfield 'a' ($a). One exception that is often seen is in Field 020 (ISBN), when the ISBN information (subfield $a) is unavailable but the price (subfield $c)
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01 Nov 14
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03 May 14
elliott3of6"A Summary of
Commonly Used MARC 21 Fields"cataloging marc marc21 libraries library reference cataloguing
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11 Apr 14
K Millerickif a tag can appear more than once in one bibliographic record, it is
labeled repeatable (R). If it can only be used once, it is labeled non-repeatable
(NR). For example, a catalog record can have several subjects, so the
tags for subject added entries (6XX) are labeled repeatable (R). -
14 Feb 14
Leslie RainsMARC 21 Reference Materials
Part VII: A Summary of Commonly Used MARC 21 Fields
Part VIII: A List of Other Fields Often Seen in MARC Records
Part IX: The Leader
Part X: Field 008 for Books -
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Dianne Deesuse with cataloging class, good explanation of basic MARC tags and format
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- 440 Series statement / Added entry--Title
- This field was made obsolete in 2008 to simplify the series statement. See 490 and 830.
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08 Jun 10
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17 Feb 10
Anne Arriaga"subfields $v, $x, and $z in the 651 field are repeatable. Subfields"
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03 Feb 10
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27 Jan 10
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if a tag can appear more than once in one bibliographic record, it is labeled repeatable (R). If it can only be used once, it is labeled non-repeatable (NR)
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The use of indicators is explained in fields where they are used. Indicators are one-digit numbers. Beginning with the 010 field, in every field -- following the tag -- are two character positions, one for Indicator 1 and one for Indicator 2. The indicators are not actually defined in all fields, however. And it is possible that a 2nd indicator will be used, while the 1st indicator remains undefined (or vice versa). When an indicator is undefined, the character position will be represented by the character # (for blank space).
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All the data in each field (beginning with the 010 field) is divided into subfields, each of which is preceded by a delimiter-subfield code combination
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Some subfields are repeatable.
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22 Sep 08
tompasleySome of the less familiar fields:
001 System ID
005 Date and time of latest transaction
006 Fixed-length data elements -- additional material characteristics
007 Physical description fixed field
008 Fixed length data elements (See Part X)
010 OCLC
020 ISstandards resources reference marc21 library marc cataloguing libraries
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24 Oct 05
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