Gitay H, Frangi J, Laine J, Erda L, Magnuson J, Noble I, Price J, Prowse T, Root T, Schultz E. Ecosystems and their goods and services. In: White KS Climate change 2001: Impacts, Adaptation, and Vulnerablility. Contribution of Working group II to the third Assessment Report of the Intergovernmental Panel on Climate Change. Climate change 2001: Impacts, Adaptation, and Vulnerablility. Contribution of Working group II to the third Assessment Report of the Intergovernmental Panel on Climate Change. Cambridge, UK; 2001. p. 235-342.
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