76 | The water bill : trickle irrigation |
77 | Guardian of the water environment |
78 | Algae demonstrations in the lab |
79 | The Tyne catchment (river factfiles) |
80 | The Calder catchment (river factfiles) |
81 | Paleolimnological Approaches to the WFD |
82 | Guide to the Medway navigation |
83 | Uses of the water environment |
84 | The Agency's conservation duties (SD2) |
85 | Water in the Thetford area
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86 | The River Darent conservation project |
87 | Viruses in the aquatic environment |
88 | The River Weaver : fact file |
89 | Meanders in the Amazon River |
90 | The Esk catchment (river factfiles) |
91 | The registration of waste carriers |
92 | The oceanography of Falmouth harbour |
93 | The Dee regulation scheme (bilingual) |
94 | The Derwent catchment (river factfiles) |
95 | The Northumberland catchment (river factfiles) |
96 | The River Alt : fact file |
97 | The River Arun : fact file |
98 | The River Mersey : fact file |
99 | The Tees catchment (river factfiles) |
100 | The Wear catchment (river factfiles) |