Document 1219
Mollen, G. 1971. The use of distress calls for scaring of birds on airfields in Norway. . Proceedings of the Bird Strike Committee Europe. BSCE6-2.3. Copenhagen, Denmark. 16 pages.
Mollen, G. 1971. The use of distress calls for scaring of birds on airfields in Norway. . Proceedings of the Bird Strike Committee Europe. BSCE6-2.3. Copenhagen, Denmark. 16 pages.
