The Main Library is composed of reading rooms with 2,200 seats and houses almost 800,000 volumes of books, monographs and references. It also holds 1,466 different periodicals, 58,034 units of non-book materials and several online databases. The Main Library opened the Digitalized Information Service Room in 1998, which allows users to access more non-book materials. The expanded and computerized library system enables users to confirm, check, renew, reserve, check-out, purchase and send orders via the internet. In 1999, the Main Library reached an agreement with the National Assembly Library for the mutual exchange of academic information through the internet, thus facilitating access to vast amounts of information. The Main Library also provides printing services for the full-text database of social science theses and dissertations. Most recently, the Main Library has created a new program which allows users better access to information on research resources, and has established the Integrated Retrieval System to facilitate easier access to multi-media data and e-books.