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6901Grey tide against green marsh : sea defences in East Anglia : synopsis of proceedings of conference held at Snape on 1st November 1991
6902Public participation and the Water Framework Directive
6903Hampshire salmon seminar 5th October 1993
6904Biological river quality 1995 according to the general quality (GQA) scheme [map] : scale 1 : 750 000
6905Chemical river quality 1993-1995 according to the general quality assessment (GQA) scheme [map] : scale 1 : 750 000
6906An investigation into bathing water quality at Millendreath
6907Guide to groundwater vulnerability mapping in England and Wales
6908Investigation of existing conservation interests and potential furtherance opportunities
6909Locations of licensed abstractions and hydrometric stations
6910NRA regional, area and catchment boundaries
6911Development of marine phytoplankton methodology and quality assurance procedures : second draft
6912Impacts Of Nutrients In Estuaries - Phase 2 : Summary Report
6913Investigation into the impact of Henstridge sewage treatment works on the River Umber, North Devon
6914Sampling Littoral Diatoms in Lakes for Ecological Status Assessments: a Literature Review
6915Sediment input from coastal cliff erosion : interim report (literature review)
6916River catchment plans for flood defence and land drainage : River Stort - evaluation report
6917Code of practice - marine activities : part I : sea-going vessels
6918Code of practice - marine activities : part II : boats - type II-V
6919Herbarium Image: Callitriche obtusangula
6920A brief history of the River Stour navigation : 1705 to the present day
6921Ely Ouse catchment management plan : first annual review Jan 1994 to Jan 1996
6922Gipping/Stour catchment management plan : final plan
6923Guide to the Medway navigation 1994
6924Harbour of Rye
6925Herbarium Image: Ludwigia palustris