1 | Humber estuary : state of the environment 1998 |
2 | The Louth coastal catchment management plan : final report |
3 | 'Sea Vigil' water quality monitoring : the Humber estuary 1992-1993 |
4 | 'Sea Vigil' water quality monitoring : the Humber estuary 1994 |
5 | Low flows and water resources : facts on the top 40 low flow rivers in England and Wales |