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La Imatge del dia a WikimediaCommons - 22 Març 2020
<<World Water Day is an annual event celebrated on March 22. The day focuses attention on the importance of fresh water and advocates for the sustainable management of freshwater resources. This day was first formally proposed in Agenda 21 of the 1992 United Nations Conference on Environment and Development in Rio de Janeiro. In 1993, the first World Water Day was designated by the Uni ...>>
commons.wikimedia.org/wiki/Mai

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