3101 | Herbarium Image: Apium nodiflorum |
3102 | Diagnostic Drawing: Diatoms freshwater pennales, |
3103 | Herbarium Image: Vulpia bromoides and Aira caryophyllea |
3104 | Diagnostic Drawing: Coccolithophorids, |
3105 | Chlorella, |
3106 | Sapiston River support scheme : test pumping of observation boreholes (92/6/362) |
3107 | Rivers and wetlands : best practice guidelines |
3108 | National Rivers Authority/Po River Basin Authority collaboration programme : (collection of documents) |
3109 | Sources of farm pollution and impact on river quality : interim report (001/6/W) |
3110 | Diagnostic Drawing: Cocolith types, |
3111 | Herbarium Image: Achillea ptarmica |
3112 | New style charging schemes for discharges and abstractions (Note 16) |
3113 | Proposed scheme of abstraction charges 1993-94 |
3114 | Flood risk management in North Wessex area : be prepared for flooding |
3115 | The National Rivers Authority employee attitude survey : summary |
3116 | The Use of a Hydroacoustic Counter for Assessing Salmon Stocks |
3117 | Factors affecting natural smolt production |
3118 | The disposal of sheep dip waste (R and D Report 11) : effects on water quality |
3119 | Dugesia tigrina, |
3120 | Herbarium Image: Potamogeton berchtoldii |
3121 | Diagnostic Drawing: Chaetophora and related genera, |
3122 | Geochemical process modelling : progress report for the period Jan - March 1993 (0295/11/A) |
3123 | Pesticides in the aquatic environment 1997 : executive summary |
3124 | Diagnostic Drawing: Codiaceae, |
3125 | River quality classification 1985-1990 : reasons for non-compliance |