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Human activities are threatening the extinction of a substantial number of species living on earth. The immense scale of the impending "extinction crisis" means that hard choices must be made about what to conserve with limited resources. How can we estimate the value of species in natural ecosystems, their value in terms of the products and services they provide, and their role in enhancing the quality of human life? Answers to these questions are necessary for the development of wise policies concerning the allocation of ...

The Preservation and Valuation of Biological Resources 1990, University of Washington Press, Seattle

ISBN-13: 9780295970042