501 | Clear Options towards an operational model for the Lee Valley Reservoirs |
502 | The Cam catchment : recommendations for statutory water quality objectives |
503 | Guidance for estimating the air quality impact of stationary sources - GN 24 |
504 | Introductory guidance on the Agency's contribution to sustainable development (SD1) |
505 | The National Centre for Toxic and Persistent Substances |
506 | Pearl Mussel Image: First out of the blocks |
507 | The Warwickshire Avon catchment management plan : final plan : October 1994 |
508 | FWR - User guide for assessing the impact of combined sewer overflows |
509 | The National Centre for Environmental Data and Surveillance : general leaflet |
510 | Project management and the scheme of delegation : a summary guide : April 1995 |
511 | The groundwater regulations (Bilingual) : Rheoliadau dwr daear (Bilingual) |
512 | The Use of Immuno Based Techniques for Chemical Analysis |
513 | Water from the River Dee : a working partnership |
514 | Land drainage byelaws 1981 and the Thames region flood defence byelaws 1991 |
515 | The evaluation of EDT QSE 334 ammonium ion selective electrode (220/17/T) |
516 | The evaluation of ingold ion selective ammonium electrode (220/23/T) |
517 | The Influence of Variations in Flow on General Quality Assessment of Rivers |
518 | Stratification in the Severn Estuary- Physical aspects and biological consequences |
519 | The Mersey estuary : a report on environmental quality |
520 | 'Sea Vigil' water quality monitoring : the East coast 1992-1993 |
521 | Catches of migratory fish in the River Don, Aberdeenshire |
522 | The evaluation of an orion ammonium ion selective electrode (220/15/T) |
523 | An Independent Review of the Defra/EA Research and Development Joint |
524 | Anthropogenic Impacts on the Hydrology of Rivers and Lochs |
525 | Dissemination of the Revitalised FEH Rainfall-runoff Method |