1 | 'Sea Vigil' water quality monitoring : the Humber estuary 1992-1993 |
2 | 'Sea Vigil' water quality monitoring : the Humber estuary 1994 |
3 | National marine baseline survey 1995 : littoral cell 2 : Flamborough Head to the Wash |
4 | Low flows and water resources : facts on the top 40 low flow rivers in England and Wales |