Document 1226
Morera, P. 1988. Evaluation of Bird Populations at Spanish Airports: Outline and Results. Proceedings of the International Bird Strike Committee, Madrid, Spain IBSC19/WP20:291-309.
Morera, P. 1988. Evaluation of Bird Populations at Spanish Airports: Outline and Results. Proceedings of the International Bird Strike Committee, Madrid, Spain IBSC19/WP20:291-309.
