426 | The River Alt/Crossens fish stock assessment 2001 |
427 | Rivers Nidd and Whafe : fact file |
428 | Local Environment Agency plan Esk and coast (Hartlepool to Filey Bay) : consultation report, November 1997 |
429 | Policy and practice for the protection of groundwater : North West region : 2nd edition, 1995 |
430 | Sankey/Glaze : second annual review : September 1999 |
431 | The River Taf catchment management plan : action plan 1995 (bilingual) : Cynllun rheoli dalgylch Afon Taf : cynllun gweithredu 1995 |
432 | Red River (R23A003) EC Dangerous Substance Directive failure 1993 : final draft report |