476 | Assessment of the feasibility of using image analysis in the oyster embryo-larval development and daphnia magna growth tests |
477 | A review of the quality and status of the Suffolk and Essex estuaries and coastal waters : volume 1 : final draft |
478 | An investigation into the frequency of discharge of three combined sewer overflows in the Afan/Kenfig catchment : TM/EAW/96/06 |
479 | NRA report of the blue-green algal monitoring 1990 : a report by the toxic blue-green algae task group |
480 | Options for transfer of water from the River Trent and reservoir storage at Great Bradley : technical summary of the feasibility report |
481 | Land use assessment of non-tidal main rivers in the southern region of the National Rivers Authority : report EX 2922 |
482 | The Natural (Baseline) Quality Of Groundwaters In England And Wales: The Permo-Triassic Sandstones Of Cumbria, North-West England; |
483 | PhD Research. Gary Stephen Rushworth. The role of aquatic macroinvertebrates within reedswamps |
484 | POLICY & PRACTICE FOR THE PROTECTION OF GROUNDWATER - DRAWINGS |
485 | 1967 - IBP Lake George, Uganda - starting to build the bedroom block |
486 | The regulation of salmon angling in Great Britain
|
487 | Disturbing the season's due: plankton periodicity in Grassmere, 1987 |
488 | The Evaluation of Acoustic Doppler Current Profiler Equipment |
489 | Modelling phytoplankton development in the proposed Cardiff Bay Barrage
|
490 | The Impact Of Particulate Outputs Associated With Timber Harvesting |
491 | The evaluation of Grant/YSU 3800 water quality monitor |
492 | PVC : an evaluation using the Natural Step framework |
493 | Recommendations For The Processing And Presentation Of Groundwater Quality Data |
494 | Quality audit of biological samples for the 1991 river quality survey |
495 | The precious resource : a brief guide to managing our water resources |
496 | Quantification of the relationship between effluent quality and biological quality : final report |
497 | Priority and other specific polluting substances and the Water Framework Directive |
498 | 'Sea Vigil' water quality monitoring : the Humber estuary 1994 |
499 | An Aerial Photograph of Ferry House and The Pearsall Building |
500 | Review of existing practices for fluvial grass management throughout the NRA (213/1/Y) |