526 | Pesticides in the aquatic environment 1997 full report |
527 | The precious resource : a brief guide to managing our water resources |
528 | Quantification of the relationship between effluent quality and biological quality : final report |
529 | Charging for discharges scheme : guidance to the agricultural industry |
530 | Priority and other specific polluting substances and the Water Framework Directive |
531 | Evaluation of historical data on the nutrient status of Esthwaite Water, Cumbria
|
532 | Review of existing practices for fluvial grass management throughout the NRA (213/1/Y) |
533 | Research and development in the Environment Agency : a short guide |
534 | Clear Options towards an operational model for the Lee Valley Reservoirs |
535 | The Cam catchment : recommendations for statutory water quality objectives |
536 | Guidance for estimating the air quality impact of stationary sources - GN 24 |
537 | Introductory guidance on the Agency's contribution to sustainable development (SD1) |
538 | The National Centre for Toxic and Persistent Substances |
539 | Algal blooms in the Lower Tees- Perspectives and prospects
|
540 | Acidification of freshwaters: the threat and its mitigation |
541 | Pearl Mussel Image: First out of the blocks |
542 | FWR - User guide for assessing the impact of combined sewer overflows |
543 | The National Centre for Environmental Data and Surveillance : general leaflet |
544 | Project management and the scheme of delegation : a summary guide : April 1995 |
545 | The groundwater regulations (Bilingual) : Rheoliadau dwr daear (Bilingual) |
546 | The Use of Immuno Based Techniques for Chemical Analysis |
547 | Water from the River Dee : a working partnership |
548 | Land drainage byelaws 1981 and the Thames region flood defence byelaws 1991 |
549 | River quality in England and Wales : a report of the 1990 survey |
550 | The evaluation of EDT QSE 334 ammonium ion selective electrode (220/17/T) |