DCM Z1: 646 Series Classification Practice
LC series practice: As of June 1, 2006, LC does not create or update SARs.
PCC series practice: Transcription of the series statement is mandatory if applicable. Searching for series authority records, tracing the series, and the creation and maintenance of series authority records are optional.
National-level PCC default classification practice = "classified separately":
A PCC library can vary from the default classification practice for reasons of local needs, preferences, or resources. If the PCC library's practice varies from the national default classification practice, any resulting analytic record may be a PCC record without a "class separately" number also being supplied.
General guidance
If a main series is classified separately, a numbered subseries is normally classified separately (the default decision). If a main series is classified separately, an unnumbered subseries can only be classified separately. If a main series is classified as a collection, a subseries (numbered or unnumbered) is normally classified with the main series.
If, by exception, a subseries has a classification decision different from that of the main series, give a second 646 field on the main series SAR identifying the subseries exception. If, by exception, a serial analytic has a classification decision different from that of the series, give a second 646 field on the series SAR identifying the serial analytic exception.
main series SAR:
050 ## $a ___ $b ___ $d all vols. except [title of subseries]
646 ## $a c $d all vols. except [title of subseries] $5 ___
646 ## $a s $d subseries [title of subseries] $5 ___
subseries SAR:
646 ## $a s $5 ___
series SAR:
050 ## $a ___ $b ___ $d [title of serial]
646 ## $a s $d all vols. except [title of serial] $5 ___
646 ## $a c $d [title of serial] $5 ___
"Classified with main or other series"
This classification decision (646 $a = m) applies to two situations:
(1) a subseries (numbered or unnumbered, entered subordinately or independently) whose main series is classified as a collection (i.e., the SAR for the main series has 646 $a = c);
If the subseries is numbered, there will be serial collected set bibliographic records for both the main series and the subseries; if the subseries is unnumbered, there will be a serial collected set record for only the main series.
(2) a multipart item, numbered or unnumbered, in a series or other multipart item that is classified as a collection (i.e., the SAR for the series or multipart item has 646 $a = c).
If the smaller multipart item is numbered, there will be collected set bibliographic records for both the series/larger multipart item and the smaller multipart item; if the smaller multipart item is unnumbered, there will be a collected set record only for the series/larger multipart item. The collected set record for the series will be a serial record; the collected set record(s) for the multipart item(s) will be monograph record(s).
Recording PCC local classification decisions
A PCC participant has the option to include or omit its classification practice when creating or modifying an SAR. Only one PCC participant may include its classification practice in an SAR.
Unnumbered volumes in a collected set series
If a numbered series that is classified as a collection has some volumes that are unnumbered, use two 646 fields:
646 ## $a c $d numbered items $5 ___
646 ## $a s $d unnumbered items $5 ___
Change of decision -- numbered monographic series
When the classification decision for a numbered monographic series has changed, generally use numeric/chronological designations in subfield $d of both 646 fields. Use the term(s) from the item itself.
Even if some volumes are not in the library, give the cut-off information for the earlier classification decision using definite beginning and ending numbers. For example, v. 1-35 are represented by classified separately analytic bibliographic records. The classification decision has changed with the processing of v. 38. Do not show gaps in the subfield $d; the person handling one of those "missing" volumes later needs to know what treatment to use.
646 ## $a c $d v. 36- $5 ___
646 ## $a s $d v. 1-35 $5 ___
not
646 ## $a c $d <v. 38 > $5 ___
646 ## $a s $d v. 1-<35 > $5 ___
At times, if volumes were cataloged out of order (any of the uncataloged issues is earlier than the latest analyzed volume in the database), some volumes would have to be reclassed into the collected set in order to give a "clean" cut-off as shown above. Instead, generally record the specific volumes for each classification practice. Give the new classification practice in the first 646 field; use a hyphen with the last number to indicate that all volumes after that number should have the same treatment. In the second 646 field, show only the specific volumes not having the new classification practice.
volumes already classified separately: no. 1-13, 15-18
being cataloged now with classification decision changed to classification as a collection: no. 14, 19-20
existing SAR:
646 ## $a s $5 ___
revised SAR:
646 ## $a c $d no. 14, 19- $5 ___
646 ## $a s $d no. 1-13, 15-18 $5 ___
volumes already classified separately: t. 1-5, 7-11, 13
being cataloged now with classification decision changed to classification as a collection: t. 6, 12
existing SAR:
646 ## $a s $5 ___
revised SAR:
646 ## $a c $d t. 6, 12, 14- $5 ___
646 ## $a s $d t. 1-5, 7-11, 13 $5 ___
For more information on DCM Z1 Instructions, select: