---
type: Changelog Entry
title: New reports on possible duplicates (ISBN, DOI)
resource: https://www.librario.de/en/changelog/2021-09-duplicate-doi-isbn
language: en
revision: e114aa541d24c57e452957a2313c85d2014b716b
tags:
- changelog
---

# New reports on possible duplicates (ISBN, DOI)

There are now more reports that help librarians raise the quality of the library.

Librario can now identify possible duplicates by DOI or ISBN.

For each possible duplicate, librarians decide whether it really is a duplicate publication (then one of the two can be deleted) or whether there is another reason for the shared ISBN or DOI.
One possible reason: a multi-volume work in which each volume is stored as its own publication.
Multi-volume works often share one ISBN.


*[DOI]: Digital Object Identifier
*[ISBN]: International Standard Book Number