Filtering by: Contributor Buchanan, David Remove constraint Contributor: Buchanan, David Contributor Department for Environment, Food and Rural Affairs Remove constraint Contributor: Department for Environment, Food and Rural Affairs Date 1997 Remove constraint Date: 1997 Funder National Rivers Authority Remove constraint Funder: National Rivers Authority Funder Scottish Office Home and Health Department Remove constraint Funder: Scottish Office Home and Health Department Type Thesis Remove constraint Type: Thesis