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|Citation:||Hammerson, G.A., Frost, D.R., Santos-Barrera, G., Vasquez Díaz, J. & Quintero Díaz, G.E. 2007. Hypsiglena torquata. The IUCN Red List of Threatened Species. Version 2014.2. <www.iucnredlist.org>. Downloaded on 21 October 2014.|
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