526 | Quality audit of biological samples for the 1991 river quality survey |
527 | Pesticides in the aquatic environment 1997 full report |
528 | The precious resource : a brief guide to managing our water resources |
529 | Quantification of the relationship between effluent quality and biological quality : final report |
530 | Priority and other specific polluting substances and the Water Framework Directive |
531 | 'Sea Vigil' water quality monitoring : the Humber estuary 1994 |
532 | Evaluation of historical data on the nutrient status of Esthwaite Water, Cumbria
|
533 | An Aerial Photograph of Ferry House and The Pearsall Building |
534 | Review of existing practices for fluvial grass management throughout the NRA (213/1/Y) |
535 | Research and development in the Environment Agency : a short guide |
536 | Clear Options towards an operational model for the Lee Valley Reservoirs |
537 | The Cam catchment : recommendations for statutory water quality objectives |
538 | Guidance for estimating the air quality impact of stationary sources - GN 24 |
539 | Introductory guidance on the Agency's contribution to sustainable development (SD1) |
540 | The National Centre for Toxic and Persistent Substances |
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 | The evaluation of EDT QSE 334 ammonium ion selective electrode (220/17/T) |
550 | The evaluation of ingold ion selective ammonium electrode (220/23/T) |