6926 | Biological river quality 1995 according to the general quality (GQA) scheme [map] : scale 1 : 750 000 |
6927 | Chemical river quality 1993-1995 according to the general quality assessment (GQA) scheme [map] : scale 1 : 750 000 |
6928 | An investigation into bathing water quality at Millendreath |
6929 | Guide to groundwater vulnerability mapping in England and Wales |
6930 | Investigation of existing conservation interests and potential furtherance opportunities |
6931 | Locations of licensed abstractions and hydrometric stations |
6932 | NRA regional, area and catchment boundaries |
6933 | Development of marine phytoplankton methodology and quality assurance procedures : second draft |
6934 | Impacts Of Nutrients In Estuaries - Phase 2 : Summary Report |
6935 | Investigation into the impact of Henstridge sewage treatment works on the River Umber, North Devon |
6936 | Sampling Littoral Diatoms in Lakes for Ecological Status Assessments: a Literature Review |
6937 | Sediment input from coastal cliff erosion : interim report (literature review) |
6938 | River catchment plans for flood defence and land drainage : River Stort - evaluation report |
6939 | Code of practice - marine activities : part I : sea-going vessels |
6940 | Code of practice - marine activities : part II : boats - type II-V |
6941 | Herbarium Image: Callitriche obtusangula |
6942 | A brief history of the River Stour navigation : 1705 to the present day |
6943 | Ely Ouse catchment management plan : first annual review Jan 1994 to Jan 1996 |
6944 | Gipping/Stour catchment management plan : final plan |
6945 | Guide to the Medway navigation 1994 |
6946 | Harbour of Rye |
6947 | Narrowboats on the Thames : useful hints and tips |
6948 | NRA navigation strategy |
6949 | Locks and weirs on the river Thames : how do they work? |
6950 | Catchment drainage studies and flood plain identification : Cockshaw/Halgut Burn at Hexham : section 105 - C30/92 surveys |