The National Document Supply System (ODR) is the largest Hungarian common catalogue that coordinates the administration of documents and interlibrary loans. The ODR is operated by the DEENK and the National Széchényi Library.
You can use the ODR to simultaneously search and directly request items from among the 21 million copies of more than 8 million documents in 80 Hungarian libraries.
Individual users and libraries alike can register in the system. Registered requester and supplier libraries can load their catalogues onto ODR. After it, the ODR manages the complete administration, record keeping, archiving, analyzation of the interlibrary loans.