| 51 | An Assessment of Cormorant Depredation on Stillwater Coarse Fish Populations in the Lea and Colne Valleys of the Thames Catchment |
|---|
| 52 | The Natural (Baseline) Quality Of Groundwaters In England And Wales: The Permo-Triassic Sandstones Of Cumbria, North-West England; |
|---|
| 53 | An investigation of ecological change in the rivers Kennet and Lambourn. Progress report for the period April 1999-March 2001 |
|---|
| 54 | Time of travel for the Greadon Farm pollution incident on the Upper Torridge of 19th August 1997 (1997) |
|---|
| 55 | A report on the strategic stock assessment survey of the River Esk catchment 1994 with particular reference to salmonids |
|---|
| 56 | A report on the 1992 strategic stock assessment survey of the upper Eden catchment with particular reference to salmonids |
|---|
| 57 | An estimated map of NO2 concentration in the Midlands region : a report produced for the Environment Agency |
|---|
| 58 | An investigation of ecological change in the rivers Kennet and Lambourn. Report for the period April 2000 - March 2001 |
|---|
| 59 | The Use Of DNA Fingerprinting To Study The Population Dynamics Of Otters (Lutra Lutra) In Southern Britiain - A Feasibility Study |
|---|
| 60 | An assessment of the impact of Berkhamsted and Maple Lodge STWs on the Grand Union canal based on macroinvertebrate surveys |
|---|
| 61 | Analysis of benthic macro-invertebrate samples collected by the NRA during 1989 and 1990 from various habitats in the River Delph |
|---|
| 62 | An assessment of water quality in the River Yarty catchment |
|---|
| 63 | Fisheries of the middle and lower Wylye and factors affecting their performance |
|---|
| 64 | The development and verification of methodologies for defining groundwater nitrate vulnerable zones |
|---|
| 65 | A survey of ferruginous minewater impacts in the Welsh coalfields |
|---|
| 66 | Investigation into the cause of high phenols in Budleigh Brook (1998) |
|---|
| 67 | Coniston OS map related to the Seismic Survey 1983 |
|---|
| 68 | Report on the quality of bathing waters 1990 |
|---|
| 69 | Impact of breakwaters on the water quality of Sidmouth beach |
|---|
| 70 | A survey of trace metals in biota of the Mersey estuary 1993 |
|---|
| 71 | The 1990 river and estuary classification survey of England and Wales |
|---|
| 72 | The quality of rivers and estuaries in Northumbria region 1990 |
|---|
| 73 | Fish populations of the upper River Wey and tributaries |
|---|
| 74 | Summary of monitoring activities on the blackwater estuary |
|---|
| 75 | The Ribble Estuary 1992 surveys : summary of results |
|---|
