| 976 | Hydrometric report and catalogue 1990 : National Rivers Authority, Severn-Trent Region |
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| 977 | Herbarium Image: Elodea sp. |
|---|
| 978 | Herbarium Image: Carex aquatilis |
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| 979 | Herbarium Image: Persicaria amphibia |
|---|
| 980 | Herbarium Image: Eleocharis palustris |
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| 981 | Herbarium Image: Persicaria amphibia |
|---|
| 982 | Herbarium Image: Schoenoplectus lacustris |
|---|
| 983 | Radiation Experiments on Aquatic Organisms |
|---|
| 984 | Developing Quality Assurance for Fish Counter Data - Phase 1: An Assessment of the Salmonid Fish Counter Network in England and Wales |
|---|
| 985 | STREAM thematic network : standards, measurement, testing and research in environmental instrumentation and monitoring |
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| 986 | Atlantic Salmon Trust Winter Journal 2005/2006 |
|---|
| 987 | An evaluation of discharge and consent compliance policy : a blueprint for the future |
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| 988 | An evaluation of discharge and consent compliance policy : a blueprint for the future : letters from respondents |
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| 989 | Contaminants entering the sea : a report on contaminant loads entering the seas around England and Wales 1990-1993 |
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| 990 | A simple key to canal water quality using a biological technique |
|---|
| 991 | A review of the industrial uses of continuous monitoring systems : incineration processes : a report produced for NCCA and ETSU by Entec |
|---|
| 992 | Temporal variability in chlorophyll-a : concentrations in the coastal environment : final report |
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| 993 | Biological river quality 1995 according to the general quality (GQA) scheme [map] : scale 1 : 750 000 |
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| 994 | Chemical river quality 1993-1995 according to the general quality assessment (GQA) scheme [map] : scale 1 : 750 000 |
|---|
| 995 | Guide to groundwater vulnerability mapping in England and Wales |
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| 996 | NRA regional, area and catchment boundaries |
|---|
| 997 | NRA navigation strategy |
|---|
| 998 | Herbarium Image: Potamogeton alpinus |
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| 999 | Herbarium Image: Cochlearia micacea |
|---|
| 1000 | Herbarium Image: Festuca vivipara |
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