Differentiation and structural decline in the leaves and bark of birch (Betula pendula) under low ozone concentrations

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Günthardt-Goerg, M. S., Matyssek, R., Scheidegger, C., & Keller, T. (1993). Differentiation and structural decline in the leaves and bark of birch (Betula pendula) under low ozone concentrations. Trees: Structure and Function, 7(2), 104-114. https://doi.org/10.1007/BF00225477