| 3401 | Classification of estuary quality |
|---|
| 3402 | Low-cost modifications of the Crump weir to improve fish passage |
|---|
| 3403 | Welsh Regional plan summary 1991/92 (bilingual) : Rhanbarth Cymru crynodeb cynllun 1991/92 |
|---|
| 3404 | A review of the industrial uses of continuous monitoring systems : metals industry processes |
|---|
| 3405 | Diagnostic Drawing: Cyanobacteria - unicellular and colonial, |
|---|
| 3406 | Diagnostic Drawing: Charophyceae, |
|---|
| 3407 | Paraleptophlebia submarginata |
|---|
| 3408 | Enhancing the River Tamar |
|---|
| 3409 | Diagnostic Drawing: Conjugales, |
|---|
| 3410 | Policy and practice for the protection of groundwater - Thames region appendix |
|---|
| 3411 | River Flow Indexing using benthic macroinvertebrates |
|---|
| 3412 | Information [on the NRA Anglian Region] |
|---|
| 3413 | Policy and practice for the protection of floodplains |
|---|
| 3414 | Front Cover of Turbulence in Lakes and Rivers |
|---|
| 3415 | Maidenhead, Windsor and Eton flood alleviation scheme water quality study : final report appendices |
|---|
| 3416 | 'Sea Vigil' water quality monitoring : the Wash 1992-1993 |
|---|
| 3417 | Ecdyonurus insignis |
|---|
| 3418 | Diagnostic Drawing: Chrysophyceae, |
|---|
| 3419 | Diagnostic Drawing: Conjugales desmids, |
|---|
| 3420 | Herbarium Image: Arenaria serpyllifolia |
|---|
| 3421 | Diagnostic Drawing: Cryptophyceae, |
|---|
| 3422 | Diagnostic Drawing: Cyanobacteria, |
|---|
| 3423 | Guardian of the water environment |
|---|
| 3424 | Drought : the dry facts |
|---|
| 3425 | Heptagenia fuscogrisea |
|---|
