Document 821
Heirman, J. 1975. Further Lapwing Investigations on Beauvechain Airport. Proceedings of the Bird Strike Committee Europe. BSCE10-WP10. Stockholm, Sweden. 5 pages.
Heirman, J. 1975. Further Lapwing Investigations on Beauvechain Airport. Proceedings of the Bird Strike Committee Europe. BSCE10-WP10. Stockholm, Sweden. 5 pages.
