| 251 | Alleviation of low flow studies : the River Avon and its tributaries near Malmesbury : towards a solution |
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| 252 | National marine baseline survey 1995 : littoral cell 2 : Flamborough Head to the Wash |
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| 253 | National marine baseline survey 1995 : littoral cell 11 : Great Orme to the Solway Firth |
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| 254 | Investigation into the intermittent failure of Wembury Beach to comply with EC bathing water |
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| 255 | Impact assessment of scour valve test at Roadford Reservoir on water quality of the River Lyd |
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| 256 | Report on the By Brook low flow investigations : October 2001 : volume 2 : (figures, maps and appendices) |
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| 257 | Devon area internal report - measurement of dissolved oxygen levels in the Dart estuary - March 1996 |
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| 258 | Annual classification of river water quality 1992 : numbers of samples exceeding the quality standard |
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| 259 | A change to your licence and the environment : key facts about Anglian region |
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| 260 | Scope for growth and levels of contaminants in mussels from the Wash. Phase 2 |
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| 261 | A report on a baseline survey of the subtidal benthic communities within Portland Harbour (January 1997) |
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| 262 | The environmental economy of England's northwest : a driver for economic and social progress : executive summary |
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| 263 | Impact assessment of Helston Sewage Treatment Works on water quality of the River Cober Loe Pool |
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| 264 | An audit of performance in the processing of macro-invertebrate samples in 1992 |
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| 265 | The hydrological effects of demand management : project definition stage report : 28th May 1996 |
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| 266 | River Teign corridor survey : prepared by Ecologue for the National Rivers Authority (South West Region) |
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| 267 | Report on the By Brook low flow investigations : October 2001 : volume 1 : report |
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| 268 | Linking hydrology and ecology : River Wissey : Annex B aquatic macrophytes of the River Wissey |
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| 269 | Impact assessment of Meldon quarry on water quality in the West Okement river |
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| 270 | Environmental protection - the waste management licensing regulations 1994 : amended and consolidated. Version 5 |
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| 271 | River Avon, Bath : aesthetic study of riverbanks through the urban area of Bath : final report |
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| 272 | River Wissey investigations : linking hydrology and ecology : summary of a recommendations for the River Wissey (OI/526) |
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| 273 | Mercury and methylmercury in the river Yare, Norfolk (1986 - 1992) : executive summary (OI/420/9/A) |
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| 274 | Investigation of tecnazene contamination in the Chyandour Brook west Cornwall during spring 1990 |
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| 275 | Groundwater management in the North West: efficiency review and business plan: certificate in management |
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