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Author:
Seppo Kellomäki (Professor Emeritus, University of Eastern Finland) has modified and updated the text from the reference “Kellomäki, S. 2009. Trees, forests and forest ecosystems. In: Kellomäki, S. (Ed.). Forest Resouces and Sustainable Management. 2nd edition. Paper Engineers’ Association, Helsinki, Finland. Pp. 45-46”.
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