When to use a new record

Follow OCLC guidelines for when to use a new record. In the CCS database, also apply the following:

250

A difference in edition statement alone, that indicates a difference in binding (e.g. “First paperback edition”) or does not otherwise indicate a difference in content, does not justify a new record.

260/264

A difference in publisher alone does not justify a new record.

300‡a

A difference in pagination of 10% or more justifies a new record.

300‡b

A difference in illustrations, including absence vs. presence or color vs. black & white, justifies a new record.

300‡c

A difference of more than 2 cm justifies a new record.

340‡n

A significant difference in font size justifies a new record.

500

A difference in aspect ratio justifies a new record.

511

A difference in performers (e.g. audiobook narrator) justifies a new record.

Additionally, any difference in significant content (e.g. explicit vs. edited lyrics, with vs. without special features, with vs. without reader’s guide, video language options) justifies a new record.

When in doubt, use a new record.

Local library exception

When a library receives a copy that requires a new record according to these guidelines, that library may choose to attach it to an existing record instead. If this is done, the existing record must not be modified to reflect this nonstandard usage. (The library should be aware that this may cause state or national problems with interlibrary loan: a library may request your copy via OCLC, but what is owned is not exactly what the patron wanted.)