1.

図書
図書
1. Our common future
World Commission on Environment and Development
出版情報: Oxford ; New York : Oxford University Press, 1987
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2.

図書
図書
2. Agenda 21 : the Earth Summit strategy to save our planet
introduction by Paul Simon ; edited by Daniel Sitarz
出版情報: Boulder, Colo. : EarthPress, c1993
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