The new rivers & wildlife handbook /
Ward, Diana.
Holmes, Nigel,1949-
José, Paul.
Royal Society for the Protection of Birds.
Wildlife Trust for Bedfordshire, Cambridgeshire, Northamptonshire and Peterborough.
Great Britain.National Rivers Authority.
Sandy : Royal Society for the Protection of Birds,
1994.
At bottom of title: RSPB, NRA, The Wildlife Trusts.
Bibliography: p. 409-416. - Includes index.