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This list identifies data elements from Update no. 4 (October 2003) to the MARC 21 Formats for Bibliographic and Authority data that will become valid in LC's system no earlier than November 2004 (unless otherwise specified below).

1. NEW BIBLIOGRAPHIC RECORD ELEMENTS

This list is provided to assist in evaluating the impact on automated systems as these elements could be present in records issued by the Library of Congress; they do not necessarily reflect values that will be actively supplied by LC cataloging staff. These elements are fully documented in the MARC 21 Format for Bibliographic data (http://www.loc.gov/marc/bibliographic).

CONTINUING RESOURCES 006/03 and CONTINUING RESOURCES 008/20 ISSN Center

Position changed to undefined.

022 - International Standard Serial Number

new subfield: $2 Source

352 - Digital Graphic Representation

new subfield: $q Format of the digital image

365 - Trade Price

new field

366 - Trade Availability Information

new field

538 - System Details Note

new subfield: $i Display text

new subfield: $u Uniform Resource Identifier

new subfield: $3 Materials specified

773 - Host Item Entry

new subfield: $q Enumeration and first page

2. NEW AUTHORITY RECORD ELEMENTS

none at this time (see section 4 below)

3. BIBLIOGRAPHIC ELEMENTS FOR FUTURE IMPLEMENTATION

The following changes left over from Update No. 2 (October 2001) to the MARC 21 Format for Bibliographic Data will still not be implemented at the Library of Congress at this time. A future notice will be issued when implementation details have been set.

LEADER/07 (Bibliographic level)

new code: i (Integrating resource)

260 - Publication, distribution, etc. (Imprint):

change from non-repeatable to repeatable

define first indicator (Sequence of publishing statements) with values:

[blank] (Not applicable/No information provided/Earliest available publisher)

2 (Intervening publisher)

3 (Current/latest publisher)

4. AUTHORITY ELEMENTS FOR FUTURE IMPLEMENTATION

The following changes from Update No. 3 (October 2002) and Update No. 4 (October 2003) to the MARC 21 Format for Authority Data will not be implemented at the Library of Congress at this time. A future notice will be issued when implementation details have been set.

024 - Other Standard Identifier : new field

148 - Heading--Chronological term : new field

448 - See from tracing--Chronological term : new field

548 - See also from tracing --Chronological term : new field

748 - Established heading linking entry--Chronological term : new field

670 - Source data found

new subfield: $u (Uniform Resource Identifier)

July 22, 2004