In the Reference Books Room, a reference collection of approximately 30,000 volumes on subjects in the social science and humanities are on open access on shelves. The collection includes dictionaries, encyclopedias, directories, statistical books, atlases, bibliographies, indexes, and catalogues of other libraries. The shelves of Japanese reference books and those of foreign books are separately arranged according to NDL classification. No special registration is required to use the room. Reference service is available at the two counters, for humanities and for social science.
Materials are to be used only in the room except when brought out to be photoduplicated.