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bizkaia.net
ietb.bizkaia.net
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Adeliño Ortega, Charo. "Carta Puebla"(PDF). Bilbao 700. p. 6. Archived from the original(PDF) on 24 July 2008. Retrieved 18 July 2008.
Iñaki Azkuna (February 2007). Bilbao City Council (ed.). "Al mayor Robles"(PDF). Bilbao Newspaper. Archived from the original(PDF) on 23 September 2015. Retrieved 19 July 2008.
Asociación de Periodistas de Vizcaya. "Crónica de siete siglos"(PDF). Bilbao 700. p. 24. Archived from the original(PDF) on 24 July 2008. Retrieved 17 July 2008.
Zabala Uriarte, Aingeru (17 September 2008). "Crónica de siete siglos"(PDF). Bilbao 700: 40. Archived from the original(PDF) on 24 July 2008. Retrieved 17 August 2018.
Orive, Emma & Rallo, Ana (October 2002). "Ríos de Bizkaia". Diputación Foral de Bizkaia: Instituto de Estudios Territoriales de Bizkaia. Archived from the original on 23 January 2009. Retrieved 24 July 2008.
Uriarte, Iñaki (March 2006). "La ría y el canal de Deustu"(PDF). Periódico Bilbao. Archived(PDF) from the original on 24 January 2009. Retrieved 25 July 2008.
"SAIL in Festival 2018". kulturklik. Basque Autonomous Government. 21 February 2018. Archived from the original on 9 September 2018. Retrieved 9 September 2018.