Oca River, Biscay (English Wikipedia)

Analysis of information sources in references of the Wikipedia article "Oca River, Biscay" in English language version.

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Amboto, Rosa (2005). "Urdaibai, reserva de la biosfera. Ambientes". Urdaibai, reserva de la biosfera (in Spanish). Archived from the original on 8 December 2012. Retrieved 22 January 2008.
Amboto, Rosa (2005). "Urdaibai, reserva de la biosfera. Biodiversidad. Fauna". Urdaibai, reserva de la biosfera (in Spanish). Archived from the original on 6 January 2013. Retrieved 22 January 2008.

"Bizkaia maitea. Urdaibai". Diputación Foral de Vizcaya (in Spanish). Bilbao, Spain. 2004. Archived from the original on 10 March 2009. Retrieved 22 January 2008.
"Medio Ambiente: Hidrología: Cuencas: Oka" (PDF). Bizkaiko Foru Aldundia – Diputación Foral de Bizkaia (in Spanish). Bilbao, Spain. Archived from the original (PDF) on 28 March 2014. Retrieved 9 February 2008.

"FAUNA. Una variopinta comunidad zoológica". Gobierno Vasco. Departamento de medio ambiente y ordenación del territorio. (in Spanish). Vitoria, Spain. 2004. Archived from the original on 29 March 2014. Retrieved 22 January 2008.

Amboto, Rosa (2005). "Urdaibai, reserva de la biosfera. Ambientes". Urdaibai, reserva de la biosfera (in Spanish). Archived from the original on 8 December 2012. Retrieved 22 January 2008.
Amboto, Rosa (2005). "Urdaibai, reserva de la biosfera. Biodiversidad. Fauna". Urdaibai, reserva de la biosfera (in Spanish). Archived from the original on 6 January 2013. Retrieved 22 January 2008.

"Aves de la reserva de Urdaibai". Urdaibai Hegazkiak (in Spanish). Gautegiz-Arteaga, Spain. 2008. Archived from the original on 19 November 2008. Retrieved 22 January 2008.

"Urdaibai Reserva de la Biosfera » Entorno » Geología". Urdaibaiko Galtzagorriak (in Spanish). Gernika, Spain. 2008. Retrieved 22 January 2008.

"Bizkaia maitea. Urdaibai". Diputación Foral de Vizcaya (in Spanish). Bilbao, Spain. 2004. Archived from the original on 10 March 2009. Retrieved 22 January 2008.
"Aves de la reserva de Urdaibai". Urdaibai Hegazkiak (in Spanish). Gautegiz-Arteaga, Spain. 2008. Archived from the original on 19 November 2008. Retrieved 22 January 2008.
"FAUNA. Una variopinta comunidad zoológica". Gobierno Vasco. Departamento de medio ambiente y ordenación del territorio. (in Spanish). Vitoria, Spain. 2004. Archived from the original on 29 March 2014. Retrieved 22 January 2008.
"Medio Ambiente: Hidrología: Cuencas: Oka" (PDF). Bizkaiko Foru Aldundia – Diputación Foral de Bizkaia (in Spanish). Bilbao, Spain. Archived from the original (PDF) on 28 March 2014. Retrieved 9 February 2008.