title: The Severn Estuary and Bristol Channel: a 25 year critical review.
authors.forename: W J
authors.initials: WJ
authors.lastname: Langston
authors.forename: P J C
authors.initials: PJ
authors.lastname: Jonas
authors.forename: G E
authors.initials: GE
authors.lastname: Millward
mesh_terms: D017753:Ecosystem; D004784:Environmental Monitoring; D005618:Fresh Water / Q000032:analysis* / Q000737:chemistry*; D019015:Geologic Sediments / Q000032:analysis / Q000737:chemistry; D045483:Rivers / Q000737:chemistry; D012623:Seawater / Q000032:analysis* / Q000737:chemistry*; D006113:United Kingdom