The 24th General Assembly of the International Commission on Optics (ICO), chaired by Professor Yasuhiko Arakawa, was held at a hotel in Shinjuku, Tokyo, from 21 August and was attended by Their Majesties, as reported by a number of media.
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〇The Mainichi Shimbun 2017.08.22_24page
〇The Asahi Shimbun   2017.08.22_30page
〇Yomiuri Shimbun      2017.08.22_33page
Nihon Keizai Shimbun    2017.08.22_34page