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institutovazserra-antigosalunos.blogspot.com
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Paixão, Paulo; Castanheira, José Pedro (13 July 2016). "A lenda dos Magriços começou há 50 anos" [The legend of the Magriços started 50 years ago]. Expresso (in Portuguese). Archived from the original on 2 March 2017. Retrieved 9 April 2020.