Détail du congrès:
Congrès: Ministerial conference on the protection of forests in Europe, Helsinki, FIN, 16 - 17 June 1993 (1993; FIN) (1993) |
Congrès: Ministerial conference on the protection of forests in Europe, Helsinki, FIN, 16 - 17 June 1993 (1993; FIN) (1993) |