WILLIAMS, Gwyn; HENDERSON, Andrew; GOLDSMITH, Lucy; SPREADBOROUGH, Andrew. The effects on birds of land drainage improvements in the North Kent Marshes. Wildfowl, [S. l.], p. 33–47, 1983. Disponível em: https://tidsskrift.dk/Wildfowl/article/view/154248. Acesso em: 16 dec. 2025.