1576 | Herbarium Image: Osmunda regalis |
1577 | Herbarium Image: Hieracium murorum |
1578 | Herbarium Image: Tolypella prolifera |
1579 | Herbarium Image: Frangula alnus |
1580 | Recommendations For The Processing And Presentation Of Groundwater Quality Data |
1581 | Herbarium Image: Hydrocotyle vulgaris |
1582 | Spirulina, |
1583 | Spondylosium, |
1584 | Euplotes, |
1585 | Herbarium Image: Doronicum pardalianches |
1586 | Lichen, |
1587 | Pediastrum, |
1588 | High level principles for OPRA-based schemes : guidance on the development and implementation of risk rating and regulatory resource planning systems in the Environment Agency |
1589 | Herbarium Image: Elodea canadensis |
1590 | Herbarium Image: Melampyrum pratense |
1591 | National Rivers Authority/Po River Basin Authority collaboration programme : improved monitoring systems for river water quality : comparison of experiences |
1592 | Working at demolition and construction sites |
1593 | River views advertising rates |
1594 | Herbarium Image: Potamogeton obtusifolius |
1595 | Gonium, |
1596 | HIDDEN-TA-Culexspp-001.tiff |
1597 | Herbarium Image: Pilularia sp. |
1598 | Study of the behaviour and impact of two sewage treatment works of the Thames catchment |
1599 | Microcystis, |
1600 | Staurodesmus, |