Peter Johan Schei

Redd fuglene

1989

Fuglenes verden

1979

Chairman's report : conclusions and recommendations from presentations and discussion : Norway/UN Conference on Alien Species, the Trondheim Conferences on Biodiversity : 1-5 July 1996

1996

Proceedings of the Norway/UN Conference on Norway/UN Conference on [sic] the Ecosystem Approach for Sustainable Use of Biological Diversity Trondheim, 6-10 September 1999

1999