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7051Chlorohyll and Phosphorus Classifications for UK Lakes
7052Investigating the feasibility of using neural networks to derive chlorophyll a prediction algorithms for case 2 waters
7053Temporal variability in chlorophyll-a : concentrations in the coastal environment : final report
7054Herbarium Image: Phalaris arundinacea
7055Herbarium Image: Orobanche elatior
7056An appraisal of the options for the structure of the water resources function in Thames Region NRA
7057Grey tide against green marsh : sea defences in East Anglia : synopsis of proceedings of conference held at Snape on 1st November 1991
7058Public participation and the Water Framework Directive
7059Hampshire salmon seminar 5th October 1993
7060Biological river quality 1995 according to the general quality (GQA) scheme [map] : scale 1 : 750 000
7061Chemical river quality 1993-1995 according to the general quality assessment (GQA) scheme [map] : scale 1 : 750 000
7062An investigation into bathing water quality at Millendreath
7063Guide to groundwater vulnerability mapping in England and Wales
7064Investigation of existing conservation interests and potential furtherance opportunities
7065Locations of licensed abstractions and hydrometric stations
7066NRA regional, area and catchment boundaries
7067Development of marine phytoplankton methodology and quality assurance procedures : second draft
7068Impacts Of Nutrients In Estuaries - Phase 2 : Summary Report
7069Investigation into the impact of Henstridge sewage treatment works on the River Umber, North Devon
7070Sampling Littoral Diatoms in Lakes for Ecological Status Assessments: a Literature Review
7071Sediment input from coastal cliff erosion : interim report (literature review)
7072River catchment plans for flood defence and land drainage : River Stort - evaluation report
7073Code of practice - marine activities : part I : sea-going vessels
7074Code of practice - marine activities : part II : boats - type II-V
7075Herbarium Image: Callitriche obtusangula