| 451 | Cover of A Key to the Adults and Nymphs of the British Stoneflies (Plecoptera), with Notes on their Ecology and Distribution |
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| 452 | The environment and water resources projects. Volume 1 guidelines for the scoping and environmental assessment of water resources projects |
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| 453 | Review of comments on the Environment Agency's consultative report Endocrine disrupting substances in the environment - what should be done? |
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| 454 | Recorded data from the Swan Hills weather station (weather station 1) in the Wensum Catchment between 2011-2012 |
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| 455 | Mercury, methylmercury and copper in the River Yare, Norfolk : report to the National Rivers Authority, Anglian Region |
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| 456 | Evaluation of peroxygens for the amelioration of river pollution : on behalf of the Environment Agency, Thames Region |
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| 457 | The use of air cooled blastfurnace slag as an unbound aggregate in the construction industry : BACMI/Environment Agency joint guidelines |
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| 458 | Recorded data from the Swan Hills weather station (weather station 1) in the Wensum Catchment between 2010-2011 |
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| 459 | An investigation of ecological change in the rivers Kennet and Lambourn. Report for the period April 1998-March 1999 |
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| 460 | An investigation of ecological change in the rivers Kennet and Lambourn. Progress report for the period April 1999-March 2001 |
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| 461 | A report on the 1993 strategic stock assessment survey of the Eamont catchment with particular reference to salmonid fish |
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| 462 | An investigation of ecological change in the rivers Kennet and Lambourn. Report for the period April 2000 - March 2001 |
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| 463 | Investigation into the 1999 failure of the European Community bathing waters directive at Teignmouth Town Beach (2001) |
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| 464 | An assessment of cormorant depredation on stillwater coarse fish populations in the Lea and Colne valleys of the Thames catchment |
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| 465 | A review of the quality and status of the Suffolk and Essex estuaries and coastal waters : volume 2 : final draft |
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| 466 | The hydrogeological classification of superficial clay : the hydrogeological characterisation of glacial till and glacio-lacustrine sediments in Shropshire |
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| 467 | A desk study of the available information on wintering waterfowl feeding in the Wash, Lincolnshire and Norfolk |
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| 468 | A Study of the Composition of Collected Household Waste in the United Kingdom - with particular reference to packaging waste |
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| 469 | Rising groundwater levels in the chalk-basal sands aquifer of the Central London Basin. Progress report, March 1995 |
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| 470 | Tributyltin in the aquatic environment : final report to the National Rivers Authority September 1990 to September 1992 |
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| 471 | A report on the strategic stock assessment survey of the River Esk catchment 1994 with particular reference to salmonids |
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| 472 | An investigation of ecological change in the rivers Kennet and Lambourn. Progress report for the period April 1999-March 2000 |
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| 473 | Guidance notes for local planning authorities on the methods of protecting the water environment through development plans |
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| 474 | Report on Grayling research and production in the Anglian region of the National Rivers Authority, December 1988 to April 1989 |
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| 475 | The development of biomanipulation techniques and control of phosphorus release from sediments (475/1/A) : LIFE project : restoration of the Norfolk Broads |
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