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The content of this article was taken from the German wikipedia. See the history of the German page de:Julio_Popper for details on sources. mamut 20:15, 18 March 2006 (UTC)
There's not a single reference to Julius Popper on the Havana, Cuba page; claim regarding Popper's role should be cited or deleted. PGPaulson 05:32, 30 June 2011 (UTC)
Mr. Farisori, use your eyes and please point out who in the figure "Julius Popper with a murdered Ona" is Popper?
And the sentence "In late 19th century estancieros and gold prospecters launched a campaign n of extermination against the indigenous peoples of Tierra del Fuego" is totaly out of the context, a insinuation of Popper's guilty. This one figure is not a reliable source to accuse Popper as a murderer, just like that. --Alex F. (talk) 07:31, 24 November 2011 (UTC)[reply]