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IUCN Red List Categories and Criteria version 3.1 Second Edition 

The IUCN Red List Categories and Criteria are intended to be an easily and widely understood system for classifying species at high risk of global extinction. The general aim of the system is to provide an explicit, objective framework for the classification of the broadest range of species according to their extinction risk. However, while the Red List may focus attention on those taxa at the highest risk, it is not the sole means of setting priorities for conservation measures for their protection.

Category: Books/Reports Red Lists
Authors: Prepared by the IUCN Species Survival Commission
Publication Year: 2012

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