1 | Further surveys to elucidate the distribution of the fine-lined pea mussel Pisidium tenuilineatum Stelfox, 1918 |
2 | Catches of Migratory Fish in the River Don, Aberdeenshire- Consideration of the Availability of Fish |
3 | Historic changes in the Upper River Ehen Catchment- Summary |
4 | River Axe Fish Study - Evaluation of Fish Movements in the Estuary |
5 | Water Quality and Freshwater Flow in the Thames Tideway in Relation to Salmon Migration, with particular reference to the effects of low flow in 1990 |
6 | Assessing the impact of sewage effluent disposal on groundwater (phase 2): final report |