476 | An investigation of ecological change in the rivers Kennet and Lambourn. Report for the period April 1998-March 1999 |
477 | An investigation of ecological change in the rivers Kennet and Lambourn. Progress report for the period April 1999-March 2001 |
478 | A report on the 1993 strategic stock assessment survey of the Eamont catchment with particular reference to salmonid fish |
479 | Brown trout habitat assessment on the River Bela catchment (as recommended by the strategic fisheries stock Assessment Task Group 1995) |
480 | Appendix to the biodiversity strategy and action plan for the Environment Agency (Thames Region) : costed action plan 2000-2003 |
481 | An investigation of ecological change in the rivers Kennet and Lambourn. Report for the period April 2000 - March 2001 |
482 | Investigation into the 1999 failure of the European Community bathing waters directive at Teignmouth Town Beach (2001) |
483 | An assessment of cormorant depredation on stillwater coarse fish populations in the Lea and Colne valleys of the Thames catchment |
484 | Evaluation of FRONTIERS accumulation forecasts in the NRA Thames and North West regions : final report of the Joint Met |
485 | A review of the quality and status of the Suffolk and Essex estuaries and coastal waters : volume 2 : final draft |
486 | The hydrogeological classification of superficial clay : the hydrogeological characterisation of glacial till and glacio-lacustrine sediments in Shropshire |
487 | A desk study of the available information on wintering waterfowl feeding in the Wash, Lincolnshire and Norfolk |
488 | A Study of the Composition of Collected Household Waste in the United Kingdom - with particular reference to packaging waste |
489 | Rising groundwater levels in the chalk-basal sands aquifer of the Central London Basin. Progress report, March 1995 |
490 | Tributyltin in the aquatic environment : final report to the National Rivers Authority September 1990 to September 1992 |
491 | A report on the strategic stock assessment survey of the River Esk catchment 1994 with particular reference to salmonids |
492 | An investigation of ecological change in the rivers Kennet and Lambourn. Progress report for the period April 1999-March 2000 |
493 | Report on Grayling research and production in the Anglian region of the National Rivers Authority, December 1988 to April 1989 |
494 | The development of biomanipulation techniques and control of phosphorus release from sediments (475/1/A) : LIFE project : restoration of the Norfolk Broads |
495 | The application of toxicity-based criteria for the regulatory control of wastewater dicharges Response compendium March 1997 |
496 | Rising groundwater levels in the chalk-basal sands aquifer of the Central London Basin. Progress report, March 1996 |
497 | Preliminary modelling of water storage and transfers in the Anglian region : supporting documentation for the regional water resources strategy May 1993 |
498 | Continuous water quality monitoring results collected from the river Torridge at Cockshilhay and Beam Bridge for the EU UWWTD |
499 | Water quality objectives: procedures used by the NRA for the purpose of surface waters river ecosystem) (classification) regulations 1994 |
500 | Mercury, methylmercury and copper in the River Yare, Norfolk : summary of a report to the National Rivers Authority, Anglian Region |