426 | An assessment of cormorant depredation on stillwater coarse fish populations in the Lea and Colne valleys of the Thames catchment |
427 | Evaluation of FRONTIERS accumulation forecasts in the NRA Thames and North West regions : final report of the Joint Met |
428 | A review of the quality and status of the Suffolk and Essex estuaries and coastal waters : volume 2 : final draft |
429 | The hydrogeological classification of superficial clay : the hydrogeological characterisation of glacial till and glacio-lacustrine sediments in Shropshire |
430 | A desk study of the available information on wintering waterfowl feeding in the Wash, Lincolnshire and Norfolk |
431 | A Study of the Composition of Collected Household Waste in the United Kingdom - with particular reference to packaging waste |
432 | Rising groundwater levels in the chalk-basal sands aquifer of the Central London Basin. Progress report, March 1995 |
433 | Tributyltin in the aquatic environment : final report to the National Rivers Authority September 1990 to September 1992 |
434 | A report on the strategic stock assessment survey of the River Esk catchment 1994 with particular reference to salmonids |
435 | An investigation of ecological change in the rivers Kennet and Lambourn. Progress report for the period April 1999-March 2000 |
436 | Guidance notes for local planning authorities on the methods of protecting the water environment through development plans |
437 | Report on Grayling research and production in the Anglian region of the National Rivers Authority, December 1988 to April 1989 |
438 | The development of biomanipulation techniques and control of phosphorus release from sediments (475/1/A) : LIFE project : restoration of the Norfolk Broads |
439 | Preliminary modelling of water storage and transfers in the Anglian region : supporting documentation for the regional water resources strategy May 1993 |
440 | Water quality objectives: procedures used by the NRA for the purpose of surface waters river ecosystem) (classification) regulations 1994 |
441 | Mercury, methylmercury and copper in the River Yare, Norfolk : summary of a report to the National Rivers Authority, Anglian Region |
442 | A report on the 1992 strategic stock assessment survey of the upper Eden catchment with particular reference to salmonids |
443 | River Darent low flow alleviation. Annex 3 : plan for the Darent : report of the joint NRA/TWUL project team |
444 | An assessment of the impact of Berkhamsted and Maple Lodge STWs on the Grand Union canal based on macroinvertebrate surveys |
445 | An Assessment of Cormorant Depredation on Stillwater Coarse Fish Populations in the Lea and Colne Valleys of the Thames Catchment |
446 | Water framework directive : guiding principles on the technical requirements (summary) : accompanying summary to the Environment Agency consultation document |
447 | A biological investigation of the affects of discharges from Meldon quarry on the West Okemont River - 8/08/89 and 20/09/89 |
448 | An investigation into the elevated BOD levels at Brocken Bridge (R30H001) on the Barnstaple Yeo [DEV/E/20/95] |
449 | Options for development of an enhanced team culture in the NRA, using the Welsh Regional Technical Department as an example |
450 | A preliminary investigation into the extent of saline ingress into Curry Moor from the River Tone, January 1994 |