Document 1038
Kuyk, F. 1981. Distribution Patterns of Gulls Around Schiphol Airport and Leeuwarden Air Base in the Period August 1980 – April 1981. Proceedings of the International Bird Strike Committee, Brussels, Belgium IBSC15-WP27. 5 pages.
Kuyk, F. 1981. Distribution Patterns of Gulls Around Schiphol Airport and Leeuwarden Air Base in the Period August 1980 – April 1981. Proceedings of the International Bird Strike Committee, Brussels, Belgium IBSC15-WP27. 5 pages.
