Día Mundial de la Educación Ambiental – 26 de enero
Cada 26 de enero, desde 1972, se conmemora el Día Mundial de la Educación Ambiental, instaurado en la Declaración de Estocolmo por las Naciones Unidas. Tres años después, …
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Etiqueta: Declaración de Estocolmo por las Naciones Unidas