Institution: | 1. Escuela Técnica Superior de Ingeniería de Montes, Forestal y del Medio Natural, Universidad Politécnica de Madrid, Ciudad Universitaria s/n. 28040, Madrid, Spain 2. Faculty of Forest Sciences, Southern Swedish Forest Research Centre, Swedish University of Agricultural Sciences, Box 49, 230 53, Alnarp, Sweden 3. School of Forest Sciences, University of Eastern Finland, P.O. BOX 111, 80101, Joensuu, Finland
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