51 | The water quality of the Humber Estuary 1992 : a report from The Humber Estuary Committee |
52 | The influx of black magnetic spherules to the lakes of the English Lake District |
53 | A guide to the interpretation of the electron micrographs contained within the "Ken Clarke Collection" |
54 | Angle on the Broads : helping you get the most out of fishing on the Broads |
55 | The quality of the Humber Estuary 1980-1990 : report of the National Rivers Authority |
56 | Domesday to the dawn of the new millennium : 900 years of the Don Fishery |
57 | The importance of sediment release of phosphorus in the restoration of the Norfolk Broads |
58 | The Thames navigation : charting the future : a consultation document issued by the NRA Thames Region |
59 | State of the environment 2005 : the Environment Agency's assessment of the environment in South East England |
60 | Back to life : bringing the environment back to the people of the North West |
61 | State of the environment 2003 : the Environment Agency's assessment of the environment in South East England |
62 | State of the Environment 2006 : the Environment Agency's assessment of the environment in South East England |
63 | Study into the effect of Chertsey STW on the North Arm of the River Bourne |
64 | The Natural (Baseline) Quality Of Groundwaters In England And Wales. The Chalk Of The South Downs |
65 | Fish Tanks in the Hatchery |
66 | The Ferry Boat in 1905 |
67 | The industrial fishery for sandeels |
68 | The Soar Valley improvement scheme |
69 | Annex to 'achieving the quality' |
70 | The Aire catchment (river factfiles) |
71 | Protecting the Kenwith Valley, Bideford |
72 | Welcome to the Essex catchment |
73 | Algae demonstrations in the lab |
74 | The Tyne catchment (river factfiles) |
75 | The Calder catchment (river factfiles) |