THOMAS, G J. Ingested lead pellets in waterfowl at the Ouse Washes, England, 1968-73. Wildfowl, [S. l.], v. 26, p. 43–48, 1975. Disponível em: https://tidsskrift.dk/Wildfowl/article/view/154313. Acesso em: 19 apr. 2026.