4176 | Non-ferrous metals : supplementary guidance |
4177 | Investigation into farm pollution at Wheddon Cross (1999) |
4178 | Domesday to the dawn of the new millennium : 900 years of the Don Fishery |
4179 | Lagerheimia, |
4180 | Tolypothrix, |
4181 | Historic changes in the Upper River Ehen Catchment- Summary |
4182 | Metallothionein in eels from the Thames Estuary : an indicator of environmental quality |
4183 | Weather data: AC0111, Cambridgeshire, 2009 |
4184 | West Midlands Stour : consultation report |
4185 | Geochemical process modelling : interim report (0295/2/A) |
4186 | Species Management in Aquatic Habitats Compendium of Project Outputs - Research and Survey Reports on Non-Mullusc Species |
4187 | Fisheries technical report : Devon area report : River Taw fisheries survey 1996 |
4188 | Draparnaldia, |
4189 | Synura, |
4190 | Darwell Transfer Scheme. Final Report Part III. Water quality in the Darwell Reservoir |
4191 | Herbarium Image: Stachys officinalis |
4192 | Water pollution incidents in England and Wales 1991 : report of the National Rivers Authority |
4193 | Validation of Diatoms as Proxys for Phytobenthos When Assessing Ecological Status in Lakes |
4194 | The extent of phosphorus release in the Norfolk Broads |
4195 | River Exe catchment river water quality classification 1991 |
4196 | Controls on emissions from coal and oil fired power stations : the agency's decision following its 1999 public consultation on its proposed controls |
4197 | Steady-state particle tracking in the object-orientated regional groundwater model ZOOMQ3D |
4198 | Wensum DTC General information - Supporting Document Monitoring Kiosk M |
4199 | NRA policy implementation guidance note no. 5 : control of pollution (silage, slurry and agricultural fuel oil) regulations 1991 |
4200 | General introduction to the Water Framework Directive |