51 | An investigation of the Madford River pollution incident of 29 July 1989 : November 1989 |
52 | Greatham Creek tidal defences inter regional review : prepared for the purposes of legal proceedings |
53 | National sea defence survey phase IVA : volume 8 : topographic drawings of the River Swale |
54 | A study to investigate and propose remedies for river quality problems in the Madford catchment |
55 | East Devon public water supply strategy : the existence and potential use in yield analysis of historic flow records |