Document 1392
Ruhe, W. 1994. New Developments for Improving the German Birdtam/Birdstrike Warning System. Proceedings of the International Bird Strike Committee, Vienna, Austria IBSC22/WP36:263-274.
Ruhe, W. 1994. New Developments for Improving the German Birdtam/Birdstrike Warning System. Proceedings of the International Bird Strike Committee, Vienna, Austria IBSC22/WP36:263-274.
