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By: Arbea, Javier I. - Moraza, L. - Montenegro, E. - Mateo, M. D. - Hernandez, M. A. - Herrera, L - Jordana, R. (Rafael)Type: ArticleIn: Revue suisse de zoologieVolume: 94Series:Issue:Date: 1987Page Range: 491--502Publication Info: Genève Kundig [etc.]Subjects: