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UNCED United Nations Conference on Environment and Development, Rio de Janeiro, Brazil, 1992 | |||
United Nations Conference on Environment and Development; Earth Summit | |||
西班牙语 词库 | |||
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Vertice sulla terra; Conferenza delle Nazioni Unite per l'ambiente e lo sviluppo | |||
Conferencia de las Naciones Unidas sobre el Medio Ambiente y el Desarrollo |