51 | The management of the water resources of the Lark groundwater unit |
52 | Review of the findings of the prescribed flow at the Wallers Haven |
53 | The management of the water resources of the Little Ouse groundwater unit |
54 | The water quality of the Humber Estuary 1992 : a report from The Humber Estuary Committee |
55 | The influx of black magnetic spherules to the lakes of the English Lake District |
56 | The drought of 1995 : a report to the Secretary of State for the Environment |
57 | A guide to the interpretation of the electron micrographs contained within the "Ken Clarke Collection" |
58 | Angle on the Broads : helping you get the most out of fishing on the Broads |
59 | The quality of the Humber Estuary 1980-1990 : report of the National Rivers Authority |
60 | The importance of sediment release of phosphorus in the restoration of the Norfolk Broads |
61 | The Thames navigation : charting the future : a consultation document issued by the NRA Thames Region |
62 | Study into the effect of Chertsey STW on the North Arm of the River Bourne |
63 | Fish Tanks in the Hatchery |
64 | The Ferry Boat in 1905 |
65 | The industrial fishery for sandeels |
66 | The Soar Valley improvement scheme |
67 | Annex to 'achieving the quality' |
68 | The Aire catchment (river factfiles) |
69 | Protecting the Kenwith Valley, Bideford |
70 | Welcome to the Essex catchment |
71 | The water bill : trickle irrigation |
72 | Guardian of the water environment |
73 | Algae demonstrations in the lab |
74 | The Tyne catchment (river factfiles) |
75 | The Calder catchment (river factfiles) |