The international exchange operations of the National Diet Library in Tokyo are developed within the context of universal availability of publications, providing an historical overview of past and present operations and emphasizing the need to strengthen these exchanges with Southeast and South Asian neighbors. Included are a presentation of book title and periodical publication data emphasizing the place of official publications; an account of Japanese experience with the international exchange of publications, exchanges of official publications, other selected exchange programs, and free transmission services; and a discussion of the National Diet Library program to improve regional exchanges with Korea, China, the Philippines, Indonesia, and other nations. A 4-step program is proposed to initiate these regional program improvements. (RAA)