Dear colleagues, dear IUFRO officer, participants of Freiburg IUFRO congress! Please accept in attachment our (unit 4.05.00) information/invitation to some important events/sessions which will take place at Freiburg congress and tackle the activities of unit 4.05.00 working within division 4 (D4). We kindly invite you to active participation of these events and ask you for your valuable/supportable assistance. Thank you in advance. Looking forward to meet you in Freiburg Best regards Unit 4.05.00/D4 deputies Lidija Zadnik Don Hodges Walter Sekot Vitor Hoefflich