Authors
Bengt Andersson
The Forestry Research Institute of Sweden (Skogforsk), Box 3, SE-918 21, Sävar, Sweden
A. Fedorkov
Russian Academy of Sciences, Komi Scientific Centre, Institute of Biology, Kommun. st. 28,, Syktyvkar, Russian Federation
© 2017 Bengt Andersson, A. Fedorkov, published by Johann Heinrich von Thünen Institute
This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 License.