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By: Fernandes, Fabiano A. - Fernández-Stolz, GP. - Lopes, CM. - Freitas, Thales Renato Ochotorena de,Type: ArticleIn: Instituto Internacional de EcologiaVolume:Series:Issue:Date: 2007-12-01Page Range:Publication Info: Instituto Internacional de Ecologia 2007-12-01Subjects: Coastal Plain of Rio Grande do Sul Ctenomys Hybrid zones subterranean rodents threatened species