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Page 1: University of Wisconsin–Madisonimages.library.wisc.edu/EcoNatRes/EFacs/DNRBull/DNRBull170/refer… · Energy and materials transfer in many directions, whereas disturbances remain
Page 2: University of Wisconsin–Madisonimages.library.wisc.edu/EcoNatRes/EFacs/DNRBull/DNRBull170/refer… · Energy and materials transfer in many directions, whereas disturbances remain
Page 3: University of Wisconsin–Madisonimages.library.wisc.edu/EcoNatRes/EFacs/DNRBull/DNRBull170/refer… · Energy and materials transfer in many directions, whereas disturbances remain