by Frivold L.H
Published in Aktuelt fra Skogforsk (Norway). no. 10 (1991)

by Solheim H
Published in Aktuelt fra Skogforsk (Norway). no. 10 (1991)

by Haugan E
Published in Aktuelt fra Skogforsk (Norway). no. 10 (1991)

by Christiansen E
Published in Aktuelt fra Skogforsk (Norway). no. 10 (1991)

by Veidahl A
Published in Aktuelt fra Skogforsk (Norway). no. 10 (1991)

by Opdahl H
Published in Aktuelt fra Skogforsk (Norway). no. 10 (1991)

by Opheim T
Published in Aktuelt fra Skogforsk (Norway). no. 10 (1991)

by Frivold L.H
Published in Aktuelt fra Skogforsk (Norway). no. 10 (1991)