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8 h 58 m, 14 out 1977 ano - La Conferencia Intergubernamental sobre Educación Ambiental organizada por la UNESCO en Tibilisi.
Adicionado na linha do tempo:
Desarrollo sustentable
By
America
9 fev 2018
0
0
291
Data:
8 h 58 m, 14 out 1977 ano
Agora
~ 46 years ago
Imagens:
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