51 | The Natural (Baseline) Quality Of Groundwaters In England And Wales. The Chalk Of The South Downs |
52 | The Thames navigation : charting the future : a consultation document issued by the NRA Thames Region |
53 | The effects of flow reduction in the River Dee on the aquatic environment |
54 | The water quality of the Humber Estuary 1992 : a report from The Humber Estuary Committee |
55 | A guide to the interpretation of the electron micrographs contained within the "Ken Clarke Collection" |
56 | The drought of 1995 : a report to the Secretary of State for the Environment |
57 | The influx of black magnetic spherules to the lakes of the English Lake District |
58 | Study into the effect of Chertsey STW on the North Arm of the River Bourne |
59 | Annex to 'achieving the quality' |
60 | Fish Tanks in the Hatchery |
61 | The Calder catchment (river factfiles) |
62 | The River Arun : fact file |
63 | Algae demonstrations in the lab |
64 | The Ferry Boat in 1905 |
65 | The Aire catchment (river factfiles) |
66 | Phosphorus in the Thames catchment |
67 | The Hull catchment (river factfiles) |
68 | The Esk catchment (river factfiles) |
69 | The oceanography of Falmouth harbour |
70 | The River Ash : enhancement project |
71 | Viruses in the aquatic environment |
72 | The Tyne catchment (river factfiles) |
73 | Welcome to the Essex catchment |
74 | The River Weaver : fact file |
75 | The water bill : trickle irrigation |