title: [Control measures in the mute swan, gray goose and mallard].
mesh_terms: D000818:Animals; D001717:Birds; D004372:Ducks; D005777:Geese; D005860:Germany, West; D010571:Pest Control / Q000379:methods*
vernacular_title: Regulierungsmassnahmen bei Höckerschwan, Graugans und Stockente.