76 | The Natural (Baseline) Quality Of Groundwaters In England And Wales. The Chalk Of The South Downs |
77 | Fish Tanks in the Hatchery |
78 | The Ferry Boat in 1905 |
79 | The industrial fishery for sandeels |
80 | The Soar Valley improvement scheme |
81 | Annex to 'achieving the quality' |
82 | Protecting the Kenwith Valley, Bideford |
83 | The water bill : trickle irrigation |
84 | Guardian of the water environment |
85 | Algae demonstrations in the lab |
86 | Paleolimnological Approaches to the WFD |
87 | Guide to the Medway navigation |
88 | Uses of the water environment |
89 | The Agency's conservation duties (SD2) |
90 | Water in the Thetford area
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91 | The Development of LandSim 2.5 |
92 | Viruses in the aquatic environment |
93 | The River Weaver : fact file |
94 | Meanders in the Amazon River |
95 | Air quality and the environment |
96 | The registration of waste carriers |
97 | The oceanography of Falmouth harbour |
98 | The Dee regulation scheme (bilingual) |
99 | The River Alt : fact file |
100 | The River Arun : fact file |