See T. B. Allen, Vanishing Wildlife of North America (1974); L. Regenstein, The Politics of Extinction (1979); S. Boyd, Endangered Species (1989); E. O. Wilson, The Diversity of Life (1992); D. Ackerman, The Rarest of the Rare (1996); D. Quammen, The Song of the Dodo (1996); M. Walters, Bird Watch (2011); and the Red Data Books published by the International Union for the Conservation of Nature.
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