The Linking ISSN (ISSN-L):The Linking ISSN (ISSN-L): Crossing the Bridge to the FutureCrossing the Bridge to the Future

Regina Romano ReynoldsRegina Romano ReynoldsISSN CoordinatorISSN CoordinatorU.S. ISSN CenterU.S. ISSN CenterLibrary of CongressLibrary of Congress

ISSN =Identification

a simpler task inthe print environment

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IdentificationIdentificationIn theIn the

e-environmente-environmentE-commerceE-commercetransactionstransactions

ERMSERMSMultipleFormats

Library catalogs: singleVs. multiple records

OpenURLLinking

“Multiple ISSN Problem”• One ISSN for the print publication• One ISSN for the CD-ROM• One ISSN for the online version

• Libraries, publishers, ISSN centers were using ISSN differently

Search failures; OpenURL failures

Picture here to illustrate the digital worldISSN-L:ISSN-L:Response to the Response to the

Challenges of the Challenges of the Digital WorldDigital World

5

Revision of the ISSN Standard(ISO 3297)

2004-2007

A separate ISSNA separate ISSNfor for

each version?each version?

A single ISSN to identify

all versions?

Revised ISSNInternationalStandard

ISO 3297: 2007published August 2007

Revised ISSN Standard(ISO 3297: 2007)

• Affirmed: separate medium-specific ISSN

• Added:Linking ISSN (ISSN-L) represents all related medium-specific

ISSN

ISSN designated by the ISSN Network to enable

collocation or linking among the different versions

of a continuing resource

The Linking ISSN(ISSN-L)

Medium-specific Identification

Used for specific “product” identificationLibrary ordering, claiming, check-inPublisher pricing Subscription agenciesEAN bar codeCopyright Clearance Center

EAN for a French Serial

Medium-Neutral Identification/Collocation

• OpenURL resolution regardless of multiple ISSN for manifestations

• Grouping of all versions in ERMS• OPAC searching to retrieve all

manifestations• All situations where identification

without regard to medium is desired

Eye-readable, printable ISSN-L:

ISSN-L 0251-1479

ISSN 1234-567X (print)ISSN 0432-7654 (online)ISSN-L 0432-7654

Journal of Bridge Design& Construction

Vol. 5, no. 6June, 2008

ISSN-L and MARC 21

• MARC 21 022 $l (ISSN-L)

• MARC 21 022 $m (cancelled ISSN-L)

022 0 $a 0021-8464 $l 0021-8464222 04 The journal of adhesion &b (Print)

Record for printRecord for print

Record for onlineRecord for online

022 0 $a 1563-518X $l 0021-8464222 04 The journal of adhesion &b (Online)

Record for CD-ROMRecord for CD-ROM

022 0 $a 1026-5414 $l 0021-8464 222 04 The journal of adhesion &b (CD-ROM)

ISSN-L

How Does ISSN-L Get Assigned?

• ISSN-L is added to 022 $l on entry into the ISSN Register, Paris (programmatically)

• ISSN of first medium version entered into the ISSN Register = ISSN-L

• Applies to all resources: whether published in one medium or more, current or ceased

• In 2008, all records then in ISSN Register were allocated ISSN-L (lowest ISSN from the cluster linked via 776 field)

Can ISSN-L Be Predicted?

• Depends on which ISSN record is processed first in Paris

• Different medium versions can be published in different countries

No

ISSN-L is a separate data element.

Store ISSN-L separately from ISSN in knowledge bases and systems.

Storing ISSN-L in Systems

Embedding ISSN-L• DOI

doi:10.1038/issnl.0028-0826

• OpenURLhttp://…&rft.issnl=0028-0826&

As illustrated in ISO 3297

Major Title Changes• If titles of all versions change at once

(most common situation): A new group of ISSN is assigned The first-assigned is the Linking ISSN

• If all do not change at once, any new titles “inherit” the ISSN-L of the unchanged titles

• Now handled programmatically in Paris

NoseparatemetadatarecordforISSN-L

How to obtain ISSN-L

Free ISSN-LTables*ISSN ISSN-L0021-8464 0021-84641563-5184 0021-84641026-5414 0021-8464

ISSN-L ISSN ISSN ISSN …

0021-8464 0021-8464 1563-5184 1026-5414 …

* “artist’s conception”

CAUTION:

If incorrect ISSN are in 022 $a of your database

records,matches will fail or incorrect

ISSN-L will be added

ISSN-L and FRBRWhat FRBR Group 1 entity does ISSN-L identify? --work? --expression? --manifestation? --item

Examples of ISSN-L Use

Population of WorldCat with ISSN-L

• Spring 2010: ISSN-L added to ca. 1 million records

• ½ million additional records to be updated in a project during Summer 2010

• ISSN-L data to be updated periodically

ISSN-L in a WorldCat record

American journal of agriculturalEconomics (Online)

National Library of National Library of MedicineMedicine

All relevant ISSN includingLinking ISSN

Print ISSN and Linking ISSN bothIncluded in MEDLINE Citation

PEPRS Project

• U.K. E-journals preservation registry project partnering with ISSN Network

• ISSN-L is the matching key: supports aggregation of data from various sources

• ISSN-L ensures matches regardless of data which version’s ISSN (“p” or “e”) used

Linking ISSN

Your Input:• Currently, ISSN-L automatically assigned

in Paris, a week+ after U.S. assignment• Do publishers want to receive ISSN +

ISSN-L together? • Do publishers intend to print ISSN-L?• Is waiting an extra week ok?• Alternatively, the U.S. can explore

designating the ISSN-L in select cases

ISSN News• Integrating resources pilot project:

testing new eligibility guidelines

• ISSN Network informal test of RDA

• ISSN policy for “electronic archives,”(digitized print issues) is under development

Thank you! rrey@loc.gov