476 | The National Groundwater and Contaminated Land Centre (NGWCLC) |
477 | The evaluation of a Philips ammonium ion selective electrode (220/14/T) |
478 | The greening of Grasmere: its plankton periodicity in 1988 |
479 | A strategic review of the petroleum refinery Industry Sector |
480 | NRA strategy for reducing the concentration of pesticides in controlled waters |
481 | 'Sea Vigil' water quality monitoring : the Wash 1992-1993 |
482 | Leachate Migration Through The Triassic Sandstones At Burntstump Landfill And Elsewhere |
483 | The evaluation of a Nico Elit 051 ammonium ion selective electrode (220/16/T) |
484 | Guidance on the use of Bioassays in Ecological Risk Assessment |
485 | The National Rivers Authority employee attitude survey : summary |
486 | Geochemical process modelling : progress report for the period Jan - March 1993 (0295/11/A) |
487 | Pesticides in the aquatic environment 1997 : executive summary |
488 | The Louth coastal catchment management plan : final report |
489 | Snapshots of the environment : a new environmental approach |
490 | Second Coniston OS map related to the Seismic Survey 1983 |
491 | Note 2 by Professor Gerald Sargent regarding the Coniston Seismic Survey 1983 |
492 | Note 1 by Professor Gerald Sargent regarding the Coniston Seismic Survey 1983 |
493 | Coniston OS map related to the Seismic Survey 1983 |
494 | The flood of February 1990 : technical services flood monitoring report |
495 | Sustainable drainage systems (SuDS) : an evaluation using the Natural Step framework |
496 | Policy and practice for the protection of groundwater : Southern region appendix |
497 | Uses of the water environment: factsheet number six |
498 | River basin planning and the Water Framework Directive |
499 | (Bilingual) Assessing the impact of dewatering on water resources |
500 | Catches of Brown Trout in the River Don |