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1
State of the world, 1993 Worldwatch Institute report on progress toward a sustainable society
Publicado em 1993Livro -
2
State of the world, 1990 Worldwatch Institute report on progress toward a sustainable society
Publicado em 1990Livro -
3
State of the world, 1987 Worldwatch Institute report on progress toward a sustainable society
Publicado em 1987Livro