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4 jan 1987 ano - En 1987 seincorporo como un deber del Estado en la Constitución Política, la preservación y restauración del equilibrio ecológicoy la protección al ambiente
Adicionado na linha do tempo:
Actividad A2. Línea del tiempo La gestión ambiental en México
By
Ivan Ordinola
3 meses atrás
0
0
2200
Data:
4 jan 1987 ano
Agora
~ 38 years ago
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