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