Guidelines for Usage: 022 International Standard Serial Number

NACO LSP Usage:

Do not use the following subfields:

$y - Incorrect ISSN

$z - Canceled ISSN

$6 - Linkage

Subfield $6 has not been implemented in the LC system.

LC Usage:

LC does not use the following subfields:

$y - Incorrect ISSN

$z - Canceled ISSN

$6 - Linkage

Subfield $6 has not been implemented in the LC system.

For more information on LC Guidelines, select:

Guidelines for Usage: NACO/LSP and LC

To return:

Use the key.