Polish State Archives — shared library catalogue
The National Directorate of State Archives documents an online OPAC for the libraries of the State Archives and its central archivists’ library. Official notices refer to the Koha service, and archival-sector documentation describes the decision in 2017 to implement Koha across the archival libraries as a shared catalogue. This is one centrally coordinated network service; participating archives are not counted as separate installations. The OPAC is restricted to the State Archives network, which does not negate the institutional documentation of use.