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\bibitem{Brown_etal1994} Brown, J. L., Wasser, S. K., Wildt, D. E., \& Graham, L. H. (1994). Steroid Metabolism and the Effectiveness of Fecal Assays for Assessing Reproductive Status in Felids. \textit{Biology of Reproduction}, \textit{50}(suppl 1), 185.

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