| 6776 | Herbarium Image: Carex aquatilis |
|---|
| 6777 | Herbarium Image: Persicaria amphibia |
|---|
| 6778 | Herbarium Image: Persicaria amphibia |
|---|
| 6779 | Herbarium Image: Persicaria hydropiper |
|---|
| 6780 | Herbarium Image: Eleocharis palustris |
|---|
| 6781 | Herbarium Image: Persicaria amphibia |
|---|
| 6782 | Herbarium Image: Schoenoplectus lacustris |
|---|
| 6783 | Herbarium Image: Schoenoplectus tabernaemontani |
|---|
| 6784 | A report on the use of pesticides at two Hampshire watercress farms |
|---|
| 6785 | A field guide to the British seaweeds : as required for assistance in the classification of water bodies under the Water Framework Directive |
|---|
| 6786 | Radiation Experiments on Aquatic Organisms |
|---|
| 6787 | Impact Of Conifer Harvesting And Replanting On Upland Water Quality |
|---|
| 6788 | Porth, Gluvian and Menalhyl catchment river water quality classification 1990 |
|---|
| 6789 | River Cober catchment river water quality classification 1991 |
|---|
| 6790 | River Fal catchment river water quality classification 1990 |
|---|
| 6791 | Fact sheet for the RBCA tool kit for chemical releases |
|---|
| 6792 | River Fal catchment river water quality classification 1991 |
|---|
| 6793 | River Par and Crinnis catchment river water quality classification 1990 |
|---|
| 6794 | River Par and Crinnis catchment river water quality classification 1991 |
|---|
| 6795 | St Austell River and south Cornwall coastal streams catchment river water quality classification 1990 |
|---|
| 6796 | The identification and investigation of a dinoflagellate bloom in Mounts Bay, Cornwall |
|---|
| 6797 | A draft code of practice for analytical quality control in National Rivers Authority laboratories |
|---|
| 6798 | Control samples for ph determination in low ionic strength waters |
|---|
| 6799 | Proposals to introduce operator monitoring assessment for emissions to air from processes regulated under integrated pollution control : consultation paper |
|---|
| 6800 | Cryptosporidium in drinking water : survey of occurrence. June 1991 |
|---|
