51 | The influx of black magnetic spherules to the lakes of the English Lake District |
52 | Domesday to the dawn of the new millennium : 900 years of the Don Fishery |
53 | The Natural (Baseline) Quality Of Groundwaters In England And Wales. The Chalk Of The South Downs |
54 | The water quality of the Humber Estuary 1992 : a report from The Humber Estuary Committee |
55 | The effects of flow reduction in the River Dee on the aquatic environment |
56 | Study into the effect of Chertsey STW on the North Arm of the River Bourne |
57 | The drought of 1995 : a report to the Secretary of State for the Environment |
58 | The Thames navigation : charting the future : a consultation document issued by the NRA Thames Region |
59 | The industrial fishery for sandeels |
60 | Meanders in the Amazon River |
61 | River in the Dourdogne region |
62 | Algae demonstrations in the lab |
63 | Fish Tanks in the Hatchery |
64 | Rivers of the New Forest |
65 | The Ferry Boat in 1905 |
66 | The Esk catchment (river factfiles) |
67 | Phosphorus in the Thames catchment |
68 | The water bill : trickle irrigation |
69 | The Calder catchment (river factfiles) |
70 | Welcome to the Essex catchment |
71 | The Severn Bore in 1994 |
72 | The Tyne catchment (river factfiles) |
73 | The Tees catchment (river factfiles) |
74 | The Northumberland catchment (river factfiles) |
75 | The Hull catchment (river factfiles) |