426 | Discharges of waste under the EC titanium dioxide directives : report of the National Rivers Authority |
427 | Protecting your future : tackling flooding in the Thames Estuary through the 21st century |
428 | Responses to 'Outlook for the environment' : a summary of the responses to the Environment Agency's consulation on the priorities for investment by water companies in environmental improvements as part of the Periodic Review |
429 | Report on the national marine analytical quality control scheme 1993/94 : presented to the 18th October 1994 meeting of the Marine Pollution Monitoring Management Group |
430 | Outlook for the environment : a consultation paper by the Environment Agency on the priorities for investment by water companies in environmental improvements |
431 | Implementation of the EC freshwater fish directive : water quality requirements for the support of fish life : report of the National Rivers Authority |
432 | East Devon public water supply strategy as assessment of the hydrological impact of the Wimbleball pump storage scheme at key sites on the River Exe |
433 | Biological Assessment Methods: Controlling the Quality of Biological Data. Package 1 The variability of data used for assessing the biological condition of rivers |
434 | Response to questions posed by Northumbrian Water Authority, with special reference to the fisheries implications of the operation of the Kielder Water Scheme
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435 | Report on the national marine analytical quality control scheme 1992/93 (MPMMG 93/12) : presented to the October 1993 meeting of the Marine Pollution Monitoring Management Group |
436 | A map of the Queen Elizabeth National Park and the area in which the IBP L. George team were situated from late 1966 to 1972. |
437 | The effects of ammonia in discharges from Hogsmill STW on the water quality of the River Thames at Teddington : Summer 1990 an update |
438 | 1995 drought report : a report on the severity of the drought of 1995 and its effect in the Severn and Trent catchments |
439 | Pesticides in the aquatic environment : report of the National Rivers Authority, prepared by the National Centre for Toxic and Persistant Substances (TAPS) |
440 | The Role of Bankside Habitat in River Ecology: The importance of riparian and marginal vegetation on the distribution and abundance of aquatice invertebrates |
441 | The Movements of Atlantic Salmon (Salmo salar L.) and Sea Trout (Salmo trutta L.) Smolts in the Impounded Estuary of the R.Tawe, South Wales |
442 | The new waterlands? Proceedings of a one day seminar organised by the Sussex Wildlife Trust as part of the RSNC Wildlife Trusts Parnership Water For Wildlife campaign |
443 | The effects of ammonia in discharges from Hogsmill Valley sewage treatment works on the water quality of the River Thames at Teddington |
444 | Audit surveys in the NRA Thames region : a report on the surveys carried out in 1992/93 to assess the retention and enhancement of wildlife habitats during routine dredging operations |
445 | Measures to safeguard public water supplies : a second report to the Secretary of State for the Environment on the drought of 1995 |
446 | Preliminary assessment of the ability of Restormel fish counter to enumerate the passage of migratory salmonids on the River Fowey : Cornwall Area Fisheries Science Team |
447 | The Movements of Salmon (Salmo salar L.) and Sea Trout (Salmo trutta L.) Smolts in the Lower River and Estuary of the River Conwy, North Wales |
448 | Factual report on the boreholes and installation of standpipes for the combined investigations in connection with the East Ruston common SSSI Alleviation Scheme |
449 | A study of the mayfly parasite Spiriopsis adipophila, Arvy and Peters (1972) (=Sprininella adipophila, Arvy and Delage 1966) in Ephemera danica from the River Pang, a tributary of the River Thames |
450 | Inferences on the pollution status of the Thames estuary from the macrobenthic community structure : National Rivers Authority Thames Region, Biology, Thames Estuary Benthic Programme |