An edition of Damage by the spruce bark beetle in south Norway 1970--80 (1983)

Damage by the spruce bark beetle in south Norway 1970--80

a survey, and factors affecting its occur[r]ence = Skade av granbarkbillen i Sør-Norge 1970--80 : kartfesting, og faktorer som påvirker skadeomfanget

By Richard Worrell