Studies on the spruce-cone insects Laspeyresia strobilella (L.) (Lepidoptera: Tortricidae), Kaltenbachiola strobi (Winn.) (Diptera: Itonidae) and their parasites (Hymenoptera) in Norway : biology, distribution and diapause = Studier over grankongleinsektene Laspeyresia strobilella (L.) (Lepidoptera: Tortricidae), Kaltenbachiola strobi (Winn.) (Diptera: Itonidae) o deres parasitter (Hymenoptera) i Norge : biologi, utbredelse og diapause
Alf Bakke
Bok Engelsk 1963