10 1 10 IUFRO Additional Author mixed material Japan Japanese IUFRO Congress Committee 1981 IUFRO Additional Author mixed material Norway Norwegian IUFRO Congress Comittee 1976 IUFRO Additional Author mixed material Canada The Canadian IUFRO World Congress Organizing Committee 1990 IUFRO Additional Author mixed material Canada The Canadian IUFRO World Congress Organizing Committee 1990 IUFRO Additional Author mixed material Canada The Canadian IUFRO World Congress Organizing Committee 1990 Anon Additional Author mixed material Austria Yugoslav IUFRO World Congress 1986 Research in a Changing World, Congress Report, (Vol. 1) (Ref:1) Wahid, A. Additional Author Anon Additional Author mixed material Austria IUFRO XX World Congress, Finland 1995 Research in a Changing World, Congress Report, (Vol. 2) (Ref:1) Maqbool, M.A. Additional Author Zain-ul-Abedin, M. Additional Author Korpilahti,E and Mikkela,H Additional Author mixed material Austria IUFRO XX World Congress, Finland 1995 Sustaining society and the Environment) 23-28 August 2010 IUFRO Additional Author mixed material Korea Korean host IUFRO World Congress 2010 Anon Additional Author mixed material Austria Yugoslav IUFRO World Congress 1986