6626 | Herbarium Image: Elodea sp. |
6627 | Herbarium Image: Carex aquatilis |
6628 | Herbarium Image: Persicaria amphibia |
6629 | Herbarium Image: Persicaria amphibia |
6630 | Herbarium Image: Persicaria hydropiper |
6631 | Herbarium Image: Eleocharis palustris |
6632 | Herbarium Image: Persicaria amphibia |
6633 | Herbarium Image: Schoenoplectus lacustris |
6634 | Herbarium Image: Schoenoplectus tabernaemontani |
6635 | Best Management Practices to Reduce Diffuse Pollution from Agriculture |
6636 | A report on the use of pesticides at two Hampshire watercress farms |
6637 | A field guide to the British seaweeds : as required for assistance in the classification of water bodies under the Water Framework Directive |
6638 | Radiation Experiments on Aquatic Organisms |
6639 | Impact Of Conifer Harvesting And Replanting On Upland Water Quality |
6640 | Porth, Gluvian and Menalhyl catchment river water quality classification 1990 |
6641 | River Cober catchment river water quality classification 1991 |
6642 | River Fal catchment river water quality classification 1990 |
6643 | Fact sheet for the RBCA tool kit for chemical releases |
6644 | River Fal catchment river water quality classification 1991 |
6645 | River Par and Crinnis catchment river water quality classification 1990 |
6646 | River Par and Crinnis catchment river water quality classification 1991 |
6647 | St Austell River and south Cornwall coastal streams catchment river water quality classification 1990 |
6648 | The identification and investigation of a dinoflagellate bloom in Mounts Bay, Cornwall |
6649 | A draft code of practice for analytical quality control in National Rivers Authority laboratories |
6650 | Control samples for ph determination in low ionic strength waters |