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Considerations: If you activate an ecollection from the CZ to your IZ, Alma will automatically provide a MARC top-level record for the collection, as well as for the individual titles within it.
However, resources that provide non-full-text content (such as Abstracting & Indexing databases) generally are not represented in the CZ.
Also, shared collectioncollections, which are activated from the CZ to the NZ only, will not put a collection-level record into your IZ.
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