Union catalog
A union catalog is a combined
Boolean queries. Union catalogs are useful to librarians, as they assist in locating and requesting materials from other libraries through interlibrary loan service. They also allow researchers to search through collections to which they would not otherwise have access, such as manuscript
collections.
The largest union catalog ever printed is the American
For academic publications, several
CrossRef and other sources. They include BASE, CORE and Unpaywall, which indexes over 20 million open access publications as of 2020.[3]
See also
References
- .
- ^ "About AMICUS". Archived from the original on 2016-11-04. Retrieved 2016-11-01.
- PMC 6466485.
