“Preface.” The Beaver: Its Life and Impact, Second Edition, by Dietland Müller-Schwarze, 2nd ed., Cornell University Press, Ithaca; London, 2011, pp. vii-x, www.jstor.org/stable/10.7591/j.ctt7zdm0.3. Accessed 13 Aug. 2020.
Müller-Schwarze, D. (2011). Preface. In The Beaver: Its Life and Impact, Second Edition (pp. Vii-X). Ithaca; London: Cornell University Press. Retrieved August 13, 2020, from www.jstor.org/stable/10.7591/j.ctt7zdm0.3
Müller-Schwarze, Dietland. "Preface." In The Beaver: Its Life and Impact, Second Edition, Vii-X. Ithaca; London: Cornell University Press, 2011. Accessed August 13, 2020. www.jstor.org/stable/10.7591/j.ctt7zdm0.3.
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