[Geoinquiets Barcelona] extinció del bisó

[Raf Roset]

Artivle amb mapa de l'extermini de bisons
http://longstreet.typepad.com/thesciencebookstore/2011/06/-a-history-blank-empty-and-missing-things-76-the-american-bison-extermination-map.html

Raf
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