Document 1566
Stenman, O. 1984. Radar Observation of the Migration of Arctic Birds in Finland. Proceedings of the International Bird Strike Committee, Rome, Italy IBSC17/WP32:369-370.
Stenman, O. 1984. Radar Observation of the Migration of Arctic Birds in Finland. Proceedings of the International Bird Strike Committee, Rome, Italy IBSC17/WP32:369-370.
