Przemko Pachana

Eberswalde University for Sustainable Development, Faculty of Forest and Environment,
Alfred-Möller-Strasse 1, 16225 Eberswalde, Germany

Warsaw University of Life Sciences, Faculty of Forestry, Department of Forest Management, Geomatics and Forest Economics,
Nowoursynowska 159, 02-776 Warsaw, Poland,
phone: +48791709242, e-mail: przemko.pachana@gmail.com