51 | The Waterways Bird Survey |
52 | The Colne Barrier 1999 |
53 | Fishing in the South |
54 | Enhancing the River Otter |
55 | The Ouse Washes Folder |
56 | Review of the findings of the prescribed flow at the Wallers Haven |
57 | The management of the water resources of the Little Ouse groundwater unit |
58 | The management of the water resources of the Lark groundwater unit |
59 | An aerial photograph of The Ferry House prior to the construction of The Pearsall Building |
60 | The influx of black magnetic spherules to the lakes of the English Lake District |
61 | The effects of flow reduction in the River Dee on the aquatic environment |
62 | The water quality of the Humber Estuary 1992 : a report from The Humber Estuary Committee |
63 | A guide to the interpretation of the electron micrographs contained within the "Ken Clarke Collection" |
64 | The drought of 1995 : a report to the Secretary of State for the Environment |
65 | Back to life : bringing the environment back to the people of the North West |
66 | The quality of the Humber Estuary 1980-1990 : report of the National Rivers Authority |
67 | Study into the effect of Chertsey STW on the North Arm of the River Bourne |
68 | The Natural (Baseline) Quality Of Groundwaters In England And Wales. The Chalk Of The South Downs |
69 | The importance of sediment release of phosphorus in the restoration of the Norfolk Broads |
70 | The Thames navigation : charting the future : a consultation document issued by the NRA Thames Region |
71 | River in the Dourdogne region |
72 | Annex to 'achieving the quality' |
73 | Paleolimnological Approaches to the WFD |
74 | Road transport and the environment |
75 | Fish Tanks in the Hatchery |