Bird Observation by the Skyguard Search and Tracking Radar.
Becker, J. 1990. Bird Observation by the Skyguard Search and Tracking Radar. Proceedings of the International Bird Strike Committee, Helsinki, Finland IBSC20/WP23. 1 page.
Becker, J. 1990. Bird Observation by the Skyguard Search and Tracking Radar. Proceedings of the International Bird Strike Committee, Helsinki, Finland IBSC20/WP23. 1 page.
