세계도서관현황 : 어린이서비스중심 / 국립어린이청소년도서관 (Korea). - Seoul : 국립어린이청소년도서관, 2007. - 236 pages : illustrations ; 26 cm. - 027 (519) (NLA) . ISBN: 9788960320338 Subjects--Topical Terms: Public libraries.Children's libraries Universal Decimal Class. No.: 027 (519) (NLA)