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WikiPedia: Cõng ghép đôi http://www.globaltwitcher.com/artspec_information.... //doi.org/10.2108%2Fzsj.13.151 https://web.archive.org/web/20090527153302/http://... https://web.archive.org/web/20090703075359/http://... https://commons.wikimedia.org/wiki/Category:Amphib...