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\bibitem{Roth_etal1995} Roth, T. L., Swanson, W. F., \& Wildt, D. E. (1995). Snow leopard (Panthera unica) sperm longevity in vitro is not influenced by protein or energy source supplements but is affected by buffer source. \textit{Theriogenology}, \textit{43}(1), 309.

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