Global Commons Stewardship Index was introduced in a book published by OECD

Global Commons Stewardship Index (GCSi) , which was unveiled at the Tokyo Forum 2020 Online, was introduced in a book published by OECD. The index evaluates the environmental impact of both domestic and international activities resulted from export and import for the first time in the world.
 
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https://www.u-tokyo.ac.jp/focus/en/articles/z2101_00043.html