Document 1240
Nankinov, D. 1982. Collisions of Bulgarian Civil Aviation Aircraft with Birds. Proceedings of the International Bird Strike Committee, Moscow, Russia IBSC16/WP23. 2 pages.
Nankinov, D. 1982. Collisions of Bulgarian Civil Aviation Aircraft with Birds. Proceedings of the International Bird Strike Committee, Moscow, Russia IBSC16/WP23. 2 pages.
