Stanislaw Kinelski, Bugwood.org
Maja Jurc, University of Ljubljana, Bugwood.org
Maja Jurc, University of Ljubljana, Bugwood.org
Robert Dzwonkowski, Bugwood.org
Robert Dzwonkowski, Bugwood.org
Stanislaw Kinelski, Bugwood.org
Landesforstpräsidium Sachsen , Bugwood.org