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Varas, C., C. Gonzalez Lopez, J. Ramirez, P. Krausman and M. Culver. 2007. Population structure of black bears in northern Mexico. In: Borders, Boundaries, and Time Scales, Proceedings of the Sixth Conference on Research and Resource Management in the Southwest Deserts, Extended Abstracts: December 2006, pp. 80-82.
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