401 | A desk study of the available information on wintering waterfowl feeding in the Wash, Lincolnshire and Norfolk |
402 | A Study of the Composition of Collected Household Waste in the United Kingdom - with particular reference to packaging waste |
403 | Rising groundwater levels in the chalk-basal sands aquifer of the Central London Basin. Progress report, March 1995 |
404 | A report on the strategic stock assessment survey of the River Esk catchment 1994 with particular reference to salmonids |
405 | An investigation of ecological change in the rivers Kennet and Lambourn. Progress report for the period April 1999-March 2000 |
406 | Report on the quality of bathing waters in Hampshire, Sussex, Kent and the Isle of Wight : 1992 bathing season |
407 | Guidance notes for local planning authorities on the methods of protecting the water environment through development plans |
408 | Report on Grayling research and production in the Anglian region of the National Rivers Authority, December 1988 to April 1989 |
409 | The development of biomanipulation techniques and control of phosphorus release from sediments (475/1/A) : LIFE project : restoration of the Norfolk Broads |
410 | Rising groundwater levels in the chalk-basal sands aquifer of the Central London Basin. Progress report, March 1996 |
411 | Preliminary modelling of water storage and transfers in the Anglian region : supporting documentation for the regional water resources strategy May 1993 |
412 | Water quality objectives: procedures used by the NRA for the purpose of surface waters river ecosystem) (classification) regulations 1994 |
413 | Mercury, methylmercury and copper in the River Yare, Norfolk : summary of a report to the National Rivers Authority, Anglian Region |
414 | A report on the 1992 strategic stock assessment survey of the upper Eden catchment with particular reference to salmonids |
415 | River Darent low flow alleviation. Annex 3 : plan for the Darent : report of the joint NRA/TWUL project team |
416 | An assessment of the impact of Berkhamsted and Maple Lodge STWs on the Grand Union canal based on macroinvertebrate surveys |
417 | An Assessment of Cormorant Depredation on Stillwater Coarse Fish Populations in the Lea and Colne Valleys of the Thames Catchment |
418 | Water framework directive : guiding principles on the technical requirements (summary) : accompanying summary to the Environment Agency consultation document |
419 | An investigation into the bacterial water quality of the River Umber, N. Devon : December 1996 : DEV/WQ/14/96 |
420 | An investigation into the elevated BOD levels at Brocken Bridge (R30H001) on the Barnstaple Yeo [DEV/E/20/95] |
421 | An investigation to determine if Great Torrington STW is the cause of elevated copper and zinc concentrations in the River Torridge |
422 | Options for development of an enhanced team culture in the NRA, using the Welsh Regional Technical Department as an example |
423 | A preliminary investigation into the extent of saline ingress into Curry Moor from the River Tone, January 1994 |
424 | A report on the infaunal communities within Weston Bay in relation to the sewage outfall at Black Rock |
425 | Bioccumulation of halogenated compounds by limpets and fucoid seaweeds in the vicinity by the Black Rock sewage outfall, Weston-Super-Mare |