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NLM Policy for Titles Issued in Print and Online Versions
Monographs
If a monograph is issued in print and online format, NLM catalogs the title using a single record approach. Single records are also created for material issued online and in tangible electronic formats. The catalog record is based on the first format received, with notes being added to describe additional formats available and specific details relating to that format as needed. When the record is based on the online format, the note for the print version includes pagination and illustration details if known.
EXAMPLE:
530 ‡a Issued also in print (xi, 37 p. : ill.).
For older monographs originally issued in print and then reissued in online format, NLM examines the online format to determine if the reissuance is a exact digitized reproduction of an existing print record, or if it is presented as a new edition or work. This is not an exhaustive examination, but is based on the information provided by the publisher of the online material.
For exact digitized reproductions, NLM follows the single record approach. If NLM owns the original print monograph, information about the online version is added to the existing print record. If NLM does not own the original print monograph, or if the online version is presented as a new edition, NLM creates a new record for the online title.
For monographs with microfilm preservation copies, NLM follows the single record approach.
Serials
NLM is using the single record approach for serials issued simultaneously in print and online format. NLM is also using the single record approach for serials available at NLM in print and microform, as well as for serials which are simultaneously issued in print and in tangible electronic format (direct access material, e.g. disk or CD-ROM, that are often included with the print copy). The catalog record is based on the first format received, with notes being added to describe additional formats available and specific details relating to that format as needed. Serials which are issued online and in tangible electronic format are also cataloged using the single record approach, with the cataloging record based on the first format selected.
If the print serial issues are cumulated at regular intervals onto a tangible electronic format, a single record is created with notes about the electronic cumulation, unless the electronic cumulation has a different title and/or designation system. Similarly, if electronic issues are cumulated at regular intervals onto a print format, a single record is created with a note about the print cumulation, unless the print cumulation has a different title and/or designation system.
Separate records are created when a cumulation has a different title and/or designation system, whether the cumulation is in tangible electronic or print format. Separate records are also created when a serial issued in one format ceases and begins again in another format, when there is no overlap between the periods of publication for different formats.
EXAMPLE:
A serial title is issued in print from 1950-1998.
Beginning in 1999, the print is discontinued and the title is only available online or on CD-ROM.
NLM creates separate records for the print and electronic versions.
When the periods of publication for multiple formats overlap, NLM creates a single record for the print and online version.
EXAMPLE:
A journal is issued only in print from 1950-1998, issued simultaneously in print and online from 1998-2001, and online only from 2002.
NLM uses the single record approach for this title. The cataloging record is based on the print format and the following notes are added:
500 ‡a Print issues ceased with 2001.
530 ‡a Issued also online 1998-
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Last reviewed: 29 August 2008
Last updated: 29 August 2008
First published: 01 January 2002
Metadata| Permanence level: Permanent: Dynamic Content