por IUCN.
por World Resources Institute | IUCN--The World Conservation Union | FAO | Unesco | Programa das Nações Unidas para o Meio Ambiente.
por Fundo Mundial para a Natureza | Botanic Gardens Conservation Secretariat | IUCN--The World Conservation Union.
por Whitmore, T. C | Sayer, Jeffrey | International Union for Conservation of Nature and Natural Resources. General Assembly Perth, W.A.) | International Union for Conservation of Nature and Natural Resources. Commission on Ecology | IUCN Forest Conservation Programme.
por Nowell, Kristin | Jackson, Peter | IUCN/SSC Cat Specialist Group.
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