2201 | Progress Report August 1982 |
2202 | Implementation of the EC freshwater fish directive : water quality requirements for the support of fish life : report of the National Rivers Authority |
2203 | Herbarium Image: Carex flacca |
2204 | Sea trout facts |
2205 | Boreobdella verrucata |
2206 | Report for Welsh Region on selected flood defence schemes and the development of a standard methodology for risk assessment |
2207 | Regional water quality monitoring and surveillance programme for 1993 : biological assessment of discharges on receiving waters |
2208 | Staurastrum, |
2209 | Herbarium Image: Potamogeton praelongus |
2210 | Protozoan, |
2211 | The evaluation of a Partech model 5100 hand-held dissolved oxygen meter (220/26/T) |
2212 | Mallomonas, |
2213 | Herbarium Image: Sparganium emersum |
2214 | Herbarium Image: Galeopsis tetrahit |
2215 | Soil erosion on land cultivated and drained for afforestation |
2216 | Clear Options towards an operational model for the Lee Valley Reservoirs |
2217 | Eudorina colonies, |
2218 | Herbarium Image: Oenanthe fistulosa |
2219 | Filamentous algae, |
2220 | Mallomonas, |
2221 | Presentation on river catchment management plans |
2222 | Tabellaria, |
2223 | Herbarium Image: Rhynchospora alba |
2224 | Synedra, |
2225 | Herbarium Image: Saxifraga hypnoides |