| 6551 | Herbarium Image: Elodea sp. |
|---|
| 6552 | Herbarium Image: Carex aquatilis |
|---|
| 6553 | Herbarium Image: Persicaria amphibia |
|---|
| 6554 | Herbarium Image: Persicaria amphibia |
|---|
| 6555 | Herbarium Image: Persicaria hydropiper |
|---|
| 6556 | Herbarium Image: Eleocharis palustris |
|---|
| 6557 | Herbarium Image: Persicaria amphibia |
|---|
| 6558 | Herbarium Image: Schoenoplectus lacustris |
|---|
| 6559 | Herbarium Image: Schoenoplectus tabernaemontani |
|---|
| 6560 | Best Management Practices to Reduce Diffuse Pollution from Agriculture |
|---|
| 6561 | A report on the use of pesticides at two Hampshire watercress farms |
|---|
| 6562 | A field guide to the British seaweeds : as required for assistance in the classification of water bodies under the Water Framework Directive |
|---|
| 6563 | Radiation Experiments on Aquatic Organisms |
|---|
| 6564 | Impact Of Conifer Harvesting And Replanting On Upland Water Quality |
|---|
| 6565 | Porth, Gluvian and Menalhyl catchment river water quality classification 1990 |
|---|
| 6566 | River Cober catchment river water quality classification 1991 |
|---|
| 6567 | River Fal catchment river water quality classification 1990 |
|---|
| 6568 | Fact sheet for the RBCA tool kit for chemical releases |
|---|
| 6569 | River Fal catchment river water quality classification 1991 |
|---|
| 6570 | River Par and Crinnis catchment river water quality classification 1990 |
|---|
| 6571 | River Par and Crinnis catchment river water quality classification 1991 |
|---|
| 6572 | St Austell River and south Cornwall coastal streams catchment river water quality classification 1990 |
|---|
| 6573 | The identification and investigation of a dinoflagellate bloom in Mounts Bay, Cornwall |
|---|
| 6574 | A draft code of practice for analytical quality control in National Rivers Authority laboratories |
|---|
| 6575 | Control samples for ph determination in low ionic strength waters |
|---|
