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Il ritorno delle farfalle monarca in Messico
(Justin Sullivan/ Getty Images)
(Justin Sullivan/ Getty Images)
(Amy Katz/ ZUMA Press Wire, ANSA)
(AP Photo/ Marco Ugarte)
(Susana Gonzalez/ Newsmakers via Getty Images)
(Susana Gonzalez/ Newsmakers via Getty Images)
(EPA/ Enrique Granados via ANSA)
(AP Photo/ Rebecca Blackwell)
(Tim Johnson/ MCT, ANSA)
(Justin Sullivan/ Getty Images)
(AP Photo/ Rebecca Blackwell)