Bird Migration – A Flight Safety Risk.
Becker, J. 1990. Bird Migration – A Flight Safety Risk. Proceedings of the International Bird Strike Committee, Helsinki, Finland IBSC20/WP52. 1 page.
Becker, J. 1990. Bird Migration – A Flight Safety Risk. Proceedings of the International Bird Strike Committee, Helsinki, Finland IBSC20/WP52. 1 page.
