One of the primary functions of a library information system within a network of library institutions is shared cataloguing. Shared cataloguing is an interchange of bibliographic records. The records are usually created in national library institutions, and the local libraries fetch these records and supplement them with their local data. This paper presents a system for interchanging the bibliographic records created according to UNIMARC format. One additional option is the interchange of the records coded in XML form. The server-side software module for fetching records using a WWW browser is implemented. This way enables the local libraries to collect bibliographic records via the Internet and create their own local databases.