Field definition and scope:

Field 310 contains the current stated publication frequency of either an item or an update to an item.  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 NOT 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

NR

Indicator:

 

 

 

 

First

Undefined; contains a blank

M

 

 

Second

Undefined; contains a blank

M

 

 

 

 

 

 

 

Subfield code:

 

 

 

 

$a

Current publication frequency

M

O

NR

$b

Date of current publication frequency

A

O

NR

$6

Linkage

A

O

NR

$8

Field link and sequence number

O

O

R

Input conventions:

Punctuation

Temporary data

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:

3XX  Physical Description, Etc. Fields

Variable Data Fields