| 476 | Tamar estuary and tributaries : first annual review |
|---|
| 477 | Help safeguard the Torridge (leaflet) |
|---|
| 478 | West Cornwall : first annual review : June 1999 |
|---|
| 479 | An investigation to determine the water quality of Churchstanton Stream |
|---|
| 480 | Regional water quality monitoring and surveillance programme for 1993 : tidal waters monitoring and surveillance : final draft report |
|---|
| 481 | Corporate plan 1991/1992 : Southern region |
|---|
| 482 | River Tavy EC Freshwater Fish Directive failure 1993 |
|---|
| 483 | Aldrin and dieldrin concentrations in the Newlyn catchment during 1991 an interim report |
|---|
| 484 | Catchment inventories : a summary report |
|---|
| 485 | Control of substances hazardous to health regulations 1988 : handbook of assessed general products |
|---|
| 486 | Upper Fal Estuary urban waste water treatment directive sensitive area (eutrophic) designation : final draft report |
|---|
| 487 | Annual classification of river water quality 1992 |
|---|
| 488 | Fishery byelaws 1992 |
|---|
| 489 | A study of the mayfly parasite Spiriopsis adipophila, Arvy and Peters (1972) (=Sprininella adipophila, Arvy and Delage 1966) in Ephemera danica from the River Pang, a tributary of the River Thames |
|---|
| 490 | An audit of performance in the processing of macro-invertebrate samples in 1992 |
|---|
| 491 | Biological assessment of the effects of Ivybridge Sewage Treatment Works on the River Erme |
|---|
| 492 | Macroinvertebrates in the Kennet catchment : Part 1 - water quality monitoring |
|---|
| 493 | Teign estuary post scheme appraisal report of 1991 surveys : final draft report |
|---|
| 494 | A report on a baseline survey of the subtidal benthic communities within Portland Harbour (January 1997) |
|---|
| 495 | Devon area internal report - the kingsbridge estuary - survey of the benthic microinvertebrate infauna (october 1990) for the proposed classification of estuaries in the south western region |
|---|
| 496 | East Devon public water supply strategy : preliminary assessment of epilithic algae summer and autumn 1992 - lower River Axe and Bruckland Stream |
|---|
| 497 | An investigation to determine the source of high levels of gamma-HCH in the Newlyn River during summer 1989 |
|---|
| 498 | Policy and practice for the protection of groundwater : regional appendix South West region |
|---|
| 499 | Post drought soil water recharge : a study of the processes of recharge |
|---|
| 500 | Continuous water quality monitoring results for the Carnon river |
|---|
