The Slovenská národná knižnica is a modern scientific, cultural, information and educational institution that serves all citizens of Slovakia and users from abroad. Slovak National Library is conservation and depositary library of Slovakia. SNL preferably collects, professionally processes, stores, protects and makes accessible domestic and foreign Slavic documents. Funds and collections of the Slovak National Library contain 4.9 million library items, 1.7 million archive documents and thousands of museum units.