Among them, the International Library of Children's Literature is in charge of the preservation and provision of materials primarily targeting readers under 18 years of age, out of the materials published in Japan that have been acquired by the National Library based on the Legal Deposit System, as well as the materials published outside Japan that have been brought to the National Library via purchase and international exchanges.
このうち国際子ども図書館は、納本制度によって国会図書館に集められた日本国内の出版物や購入・国際交換によりもたらされた日本国外の出版物のうち、18歳未満を読者の主たる対象とする資料の保存・提供を分担している。