{"created":"","lastModified":"","owner":{"city":"","name":"Národní knihovna ČR | National Library of the Czech Republic","postcode":""},"urls":[{"priority":1,"url":"https://www.ndk.cz/archivace/Certifik_metodika_urnnbn_2018.pdf"}],"urn":"urn:nbn:cz:nk-004hvy"}