Sternula balaenarum (Spanish Wikipedia)

Analysis of information sources in references of the Wikipedia article "Sternula balaenarum" in Spanish language version.

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seo.org

[http://www.seo.org/wp-content/uploads/2014/02/OPISTHOCOMIFORMES-GRUIFORMES-Y-CHARADRIIFORMES_3.pdf NOMBRES EN CASTELLANO DE LAS AVES DEL MUNDO RECOMENDADOS POR LA SOCIEDAD ESPAÑOLA DE ORNITOLOGIA: TERCERA PARTE