Gyorgy Csoka, Hungary Forest Research Institute, Bugwood.org
Gyorgy Csoka, Hungary Forest Research Institute, Bugwood.org
G. Reboux, Bugwood.org
G. Reboux, Bugwood.org
Daniel Adam, Office National des Forêts, Bugwood.org
Daniel Adam, Office National des Forêts, Bugwood.org
Louis-Michel Nageleisen, Département de la Santé des Forêts, Bugwood.org
William M. Ciesla, Forest Health Management International, Bugwood.org