On-line Catalogues

        National Union Catalog
        National Library
        The Sejm Library
        Warsaw - HORIZON
        Poznan - HORIZON
        Lodz - HORIZON
        Jagiellonian Library
        University Library in Torun
        Warsaw University Library

Lists

    KaRo- Distributed Catalogue of Polish Libraries

    EBIB

     On-line Catalogues 

    WorldCat - OCLC
     Library of Congress
     British Library
     Great Britain
     Germany - PICA
     Germany - KARL
     Austria

                  Lists                           

        Nationals Libraries - IFLA 
        LibDex - Worldwide index of library
        catalogues,web sites
        and Friends of Libraries pages 

         Google