General rules of using data
The Central Library of the Hungarian National Museum (HNMCL) provides the audience with all the bibliographical data of the online catalogue applying the „CC0 1.0 Universal (CC0 1.0) Public Domain Declaration” license. Based on the license HNMCL does not claim any copyright and waives its rights connected to the bibliographical data. HNMCL does not take sanctions against additional users of the bibliographical data in concern. HNMCL does not take responsibility for any damage caused by the improper use of the bibliographical data.
For further information please consult the license conditions.
Quality assurance
HNMCL is devoted to providing high quality services and exact data for your convenience. Should you need further information on any of our services or should you experience any problems regarding the data we provided, please do not hesitate to contact us at konyvtarinfo@hnm.hu.
Feedback
Your opinion is imortant for us. We would like to know more about the way you can use the bibliographical data we provide so that we can further improve our services. To help our work we kindly ask you to contact us at konyvtarinfo@hnm.hu in case you would like to share your opinion about our library with us.
References
When using our bibliographical data please refer to the library by putting a link directed to http://mnm.hu/hu/muzeum/kozponti-konyvtar/nyilt-bibliografiai-adatok.
Data Acces
Online catalogue for readers
Bibliographical records - in total or designated one by one - can be downloaded in several formats.
Z39.50 server
Main data of the library’s Z39.50 server:
Internet address: hunteka.asp.hunteka.hu
Port: 2113
Database: mnm
Format hunmarc, usmarc: UTF-8
Search character set: UTF-8
Use attribute set: as usual
Relation: for data field: 1-6, for text field: only 3
Position: not supported
Truncation: not supported but HunTéka or string search is available depending on the index
Structure: not supported
Completeness: not supported
OAI_PMH server
Main data of OAI-PMH server:
Base address: http://client.asp.hunteka.hu/mnm-oai/repositories/mnmkvt-bib
metadataPrefix: hunmarc, marc21, oai_dc.
Sample: http://client.asp.hunteka.hu/mnm-oai/repositories/mnmkvt-bib?verb=ListRe...
Open Linked Data
Our library has published its total catalogue on the semantic web in BIBFRAME format. 67,000 MARC21 records resulted in 2,000,000 statements and 50,000 relations for these sources: BNF, ISNI, LC NAF, VIAF, Wikidata. The 67,000 document descriptions were grouped around 64,000 publication by the conversion programme.
Detailed description of the data set: http://data.hnm.hu/set/colls/lib/bib/void-colls.html
SPARQL endpoint: http://data.hnm.hu/sparql/ (Graph IRI: http://data.hnm.hu/colls/lib/bib) CKAN Description: https://datahub.io/dataset/data-hnm-hu
URI name convention: http://data.hnm.hu/set/colls/uri.html
VoID file: http://data.hnm.hu/set/colls/void-colls.ttl
Cross references have been made between the BIBFRAME-base and MARC-based descriptions of single documents.
BIBFRAME description: http://data.hnm.hu/doc/colls/lib/bib/Instance/MNMKVT19563
Description: http://data.hnm.hu/doc/colls/lib/bib/Instance/MNMKVT19563.opac
Starting from the online catalogue these URL creation rules are valid:
Description: http://link.hnm.hu/lib/bib/MNMKVT19563
BIBFRAME description: http://link.hnm.hu/lib/bib/MNMKVT19563.rdf
To reach the BIBFRAME description from the online catalogue please click on the 
icon displayed on the record page.
The above URLs can be created on based on the record identifiers. http://link.hnm.hu/lib/bib/MNMKVT19563 type URLs can also be collected from the record pages.
Data sets available for download: