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1 ene 1913 año - 1913 - Primera Conferencia Internacional sobre la Protección de Paisajes Naturales (Suiza).
Añadido al timeline:
Desarrollo Sustentable
By
Hermenegildo Yukatas
11 dic 2017
0
0
640
fecha:
1 ene 1913 año
Ahora mismo
~ 111 years ago
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