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Ørbaek, Jon Børre,, Roland Kallenborn, Ingunn Tombre, Else N. Hegseth, Stig Falk-Petersen, and Alf H. Hoel. Arctic Alpine Ecosystems and People in a Changing Environment. 1edición. Berlin, Alemania: Springer, 2007.

Ørbaek, Jon Børre,, et al. Arctic Alpine Ecosystems and People in a Changing Environment. 1edición. Berlin, Alemania: Springer, 2007.