View source for National Bibliography Number

{{anchor|JPNO}}
'''National Bibliography Number''' ('''NBN''') is a group of publication identifier systems used by national libraries in countries such as {{wipe|Germany}}, Italy, {{wipe|Finland}}, {{wipe|Norway}}, The Netherlands and Sweden. There is no global standard for the contents of NBNs; instead, they have a country-specific format. NBNs are typically used for documents which do not have a publisher-assigned identifier such as an [[ISBN]]. They can be used to identify media archived in national libraries, such as Ph.D. theses.

A [[Uniform Resource Name]] (URN) namespace for NBNs has been assigned [https://www.iana.org/assignments/urn-namespaces], and is described in IETF <s>RFC 3188</s> RFC 8458. For example:

:{{code|urn:nbn:de:bvb:19-146642}}
An NBN in Germany ({{code|de}}), in Bavaria ({{code|bvb}} = ''Bibliotheksverbund Bayern''), library number 19 (University Library Munich), pointing to a PhD thesis on heat detection in cattle.

Some libraries, such as the National Library of Sweden, provide a resolution service for these URNs.[http://urn.kb.se/]

In Italy an NBN (NBN:IT) is assigned to digital resources deposited in the National Legal Deposit service [http://depositolegale.it]. The NBN:IT resolver is active at: http://nbn.depositolegale.it/

In The Netherlands the NBN (URN:NBN:NL) is assigned by the [https://www.kb.nl/organisatie/onderzoek-expertise/informatie-infrastructuur-diensten-voor-bibliotheken/registration-agency-nbn National Library (KB)]

== External links ==
{{wikidata property|P4109|P2687}}
* {{formatter link|label={{wikidata|label|Q57389504}}|url={{wdib |ps=2 |P1630 |qid=P892}} |code={{wdib |ps=2 |maxvals=1 |P892 |qid=Q57389504 |{{wikidata|property|raw|Q57389504|P892}} }} }} <!-- ←this template call should output a link to RFC 8458 (d:Q57389504), pulling its values from Wikidata -->

[[Category:Library cataloging and classification]]

{{Sourceattribution|National Bibliography Number}}