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By: Labra, Antonieta - Escobar Zapata, Carlos Alfonso - Aguilar, Paz M. - Niemeyer, Hermann M.Type: ArticleIn: Revista chilena de historia naturalVolume:Series:Issue:Date: 2002-03-01Page Range:Publication Info:Subjects: chemical discrimination Liolaemus Lizards precloacal secretions self-recognition semiochemicals