310 Current Publication Frequency (R) (Variable Data Field)
Field 310 contains the current stated publication frequency of either an item or an update to an item. Dates are included when the beginning date of the current frequency is not the same as the beginning date of the publication.
In records having field 008 (Fixed-Length Data Elements) or field 006 (Fixed-Length Data Elements - Additional Material Characteristics) configured for seriality, field 362 information is related to coded information contained in 008/18 (006/01) Continuing resources: Frequency and 008/19 (006/02) Continuing resources: Regularity. The date(s) of the current publication frequency is given when the beginning date of the current publication frequency is not the same as the beginning date of the publication.
When an item has ceased publication, the current frequency date is closed but remains in field 310.
The National level record requirement for this field is Mandatory if applicable.
Field 310 is repeatable.
Guidelines for applying content designators:
For indicator and subfield code definitions and examples, National-level (NLR) and Minimal-level (MLR) record requirements, and designator repeatability, see table below:
Position |
Description |
NLR |
MLR |
Repeatability |
Field 310 |
Current Publication Frequency |
A |
O |
R |
Indicator: |
|
|
|
|
First |
Undefined; contains a blank |
M |
|
|
Second |
Undefined; contains a blank |
M |
|
|
|
|
|
|
|
Subfield code: |
|
|
|
|
$a |
M |
O |
NR |
|
$b |
A |
O |
NR |
|
$0 |
|
|
NR |
|
$1 |
|
|
R |
|
$2 |
|
|
NR |
|
$6 |
A |
O |
NR |
|
$8 |
O |
O |
R |
Field 310 - Current Publication Frequency [changed, 2020]: Field 310 was made repeatable.
Subfield $0 - Authority record control number or standard number [new, 2020]
Subfield $1 - Real World Object URI [new, 2020]
Subfield $2 - Source [new, 2020]
Related MARC fields or documents:
006 Fixed-Length Data Elements - Additional Material Characteristics
008/18 (006/01) Continuing resources: Frequency
008/19 (006/02) Continuing resources: Regularity
321 Former Publication Frequency
362 Dates of Publication and/or Sequential Designation
880 Alternate Graphic Representation
See also: