551 | Acidification of freshwaters: the threat and its mitigation |
552 | Pearl Mussel Image: First out of the blocks |
553 | Statement on public consultation for the Dove CMP : July 1995 |
554 | The Warwickshire Avon catchment management plan : final plan : October 1994 |
555 | FWR - User guide for assessing the impact of combined sewer overflows |
556 | The National Centre for Environmental Data and Surveillance : general leaflet |
557 | Project management and the scheme of delegation : a summary guide : April 1995 |
558 | The groundwater regulations (Bilingual) : Rheoliadau dwr daear (Bilingual) |
559 | The Use of Immuno Based Techniques for Chemical Analysis |
560 | Snapshots of the environment : integrated river basin management |
561 | Water from the River Dee : a working partnership |
562 | Land drainage byelaws 1981 and the Thames region flood defence byelaws 1991 |
563 | River quality in England and Wales : a report of the 1990 survey |
564 | Snapshots of the environment : understanding coastal water quality |
565 | The evaluation of EDT QSE 334 ammonium ion selective electrode (220/17/T) |
566 | The evaluation of ingold ion selective ammonium electrode (220/23/T) |
567 | The Influence of Variations in Flow on General Quality Assessment of Rivers |
568 | Stratification in the Severn Estuary- Physical aspects and biological consequences |
569 | The Mersey estuary : a report on environmental quality |
570 | 'Sea Vigil' water quality monitoring : the East coast 1992-1993 |
571 | Catches of migratory fish in the River Don, Aberdeenshire |
572 | Stream survey and assessment in the Ashford and Folkestone areas |
573 | Lakes, Ponds and Reservoirs in the Southern Region (NRA) |
574 | The 1990 river and estuary classification survey of England and Wales |
575 | The evaluation of an orion ammonium ion selective electrode (220/15/T) |