51 | The management of the water resources of the Lark groundwater unit |
52 | The management of the water resources of the Little Ouse groundwater unit |
53 | An aerial photograph of The Ferry House prior to the construction of The Pearsall Building |
54 | The influx of black magnetic spherules to the lakes of the English Lake District |
55 | Domesday to the dawn of the new millennium : 900 years of the Don Fishery |
56 | The drought of 1995 : a report to the Secretary of State for the Environment |
57 | Back to life : bringing the environment back to the people of the North West |
58 | The quality of the Humber Estuary 1980-1990 : report of the National Rivers Authority |
59 | Study into the effect of Chertsey STW on the North Arm of the River Bourne |
60 | The Natural (Baseline) Quality Of Groundwaters In England And Wales. The Chalk Of The South Downs |
61 | The importance of sediment release of phosphorus in the restoration of the Norfolk Broads |
62 | The Thames navigation : charting the future : a consultation document issued by the NRA Thames Region |
63 | The effects of flow reduction in the River Dee on the aquatic environment |
64 | A guide to the interpretation of the electron micrographs contained within the "Ken Clarke Collection" |
65 | River in the Dourdogne region |
66 | Annex to 'achieving the quality' |
67 | Paleolimnological Approaches to the WFD |
68 | Fish Tanks in the Hatchery |
69 | Algae demonstrations in the lab |
70 | The Ferry Boat in 1905 |
71 | The tidal Thames : fact file |
72 | The Dee regulation scheme (bilingual) |
73 | The River Ash : enhancement project |
74 | Guide to the Medway navigation |
75 | Protecting the Lincolnshire Wash coast |