- WorldCat Discovery
- WorldCat Local
Some items that appear in Discovery are not OCLC items, but items made accessible through the WorldCat central index by our partners. If they match to an item you hold in the OCLC knowledge base through ISBN or ISSN, they will show as held by you in Discovery. However, they cannot be deleted in WorldCat Discovery without removing your holding on the knowledge base item with the ISBN or ISSN they matched too.