51 | Freshwater migration of sea trout (Salmo trutta L.) in the river Tywi during 1988, 1989 and 1990 |
52 | Investigation into failures of the River Dalch from Canns Mill Bridge to below Lapford sewage treatment works (2001) |
53 | River Stour (2), Sudbury : report of a river corridor survey carried out for the National Rivers Authority, Anglian region |
54 | Low flows and water resources : facts on the top 40 low flow rivers in England and Wales |
55 | An investigation to determine if Deep Moor Landfill Site is causing an impact downstream in the Peagham Stream |
56 | River Lemon corridor survey : a report prepared by Ecologue for the National Rivers Authority (South West Region) |
57 | Report on the millennium chalk streams fly trends study : a survey carried out in 2000 among 365 fly fishermen, fishery owners, club secretaries and river keepers |
58 | River Bovey and Bovey minor tributaries corridor survey : October-November 1990 : a report prepared for the National Rivers Authority (South West Region) |