551 | The evaluation of EDT QSE 334 ammonium ion selective electrode (220/17/T) |
552 | The evaluation of ingold ion selective ammonium electrode (220/23/T) |
553 | Rivers of the Isle of Wight fact file |
554 | The Influence of Variations in Flow on General Quality Assessment of Rivers |
555 | Stratification in the Severn Estuary- Physical aspects and biological consequences |
556 | 'Sea Vigil' water quality monitoring : the East coast 1992-1993 |
557 | Catches of migratory fish in the River Don, Aberdeenshire |
558 | Stream survey and assessment in the Ashford and Folkestone areas |
559 | Lakes, Ponds and Reservoirs in the Southern Region (NRA) |
560 | The 1990 river and estuary classification survey of England and Wales |
561 | The evaluation of an orion ammonium ion selective electrode (220/15/T) |
562 | An Independent Review of the Defra/EA Research and Development Joint |
563 | Anthropogenic Impacts on the Hydrology of Rivers and Lochs |
564 | Dissemination of the Revitalised FEH Rainfall-runoff Method |
565 | General guide to the prevention of water pollution |
566 | Guidance on the use of Soil Screening Values for Ecological Risk Assessment |
567 | Highway runoff: Effects of soluble pollutants on the ecology of receiving waters |
568 | Life cycle assessment of disposable and reusable nappies in the UK |
569 | Managing the social aspects of flooding: Synthesis Report |
570 | Model For Investigating The Impacts Of Groundwater Abstraction |
571 | National guidelines for the production of NRA regions 1990/91 regional plans |
572 | Operational mechanisms for the protection and enhancement of headwaters |
573 | Procurement legislation and the NRA : a brief guide |
574 | Strategic review of development and flood risk : the River Welland catchment |
575 | Strategic review of development and flood risk : the River Witham catchment |