Data format

  • MARC 21

Data exchange format

  • ISO 2709

Character set

  • UTF-8 (Unicode)

Mirror copies of NUKAT Union Authority File are supported with the following systems and supervised by the following institutions:

  • Alma ILS - Warmia and Mazury University Library
  • Aleph ILS - Public Library of the Town of Warsaw
  • Prolib ILS - Silesia University Library
  • MAK/Koha ILS - FIDES Federation

Data from NUKAT may be downloaded by:

  1. employees of institutions cooperating with NUKAT Center
    • with Virtua ILS client (bibliographic and authority records),
    • as files from NUKAT website (authority records),
    • as files from NUKAT ftp server (bibliographic and authority records and control files),
    • with clients other than Virtua, based on Z39.50 protocol (limited access)
  2. all other users
    • via cart at NUKAT website (bibliographic and authority records),
    • via KaRo - the distributed (virtual) catalog of Polish libraries (only bibliographic records).

Send your questions concerning Z39.50-based download of NUKAT data to This email address is being protected from spambots. You need JavaScript enabled to view it.



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00-312 Warsaw POLAND

(+48) 22 55 25 351

(+48) 22 55 25 330

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