1651 | Herbarium Image: Ranunculus peltatus |
1652 | Herbarium Image: Festuca arenaria var. arenaria |
1653 | River quality : July 1991 - June 1992 |
1654 | Herbarium Image: Chara vulgaris |
1655 | Mallomonas, |
1656 | Synedra, |
1657 | Herbarium Image: Osmunda regalis |
1658 | Herbarium Image: Hieracium murorum |
1659 | Herbarium Image: Tolypella prolifera |
1660 | Herbarium Image: Frangula alnus |
1661 | Recommendations For The Processing And Presentation Of Groundwater Quality Data |
1662 | Herbarium Image: Hydrocotyle vulgaris |
1663 | Spirulina, |
1664 | Spondylosium, |
1665 | Euplotes, |
1666 | Herbarium Image: Doronicum pardalianches |
1667 | Outlook for the environment : a consultation paper by the Environment Agency on the priorities for investment by water companies in environmental improvements |
1668 | Landfill and the water environment : NRA position statement |
1669 | Lichen, |
1670 | Pediastrum, |
1671 | 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 |
1672 | Herbarium Image: Elodea canadensis |
1673 | Herbarium Image: Melampyrum pratense |
1674 | National Rivers Authority/Po River Basin Authority collaboration programme : improved monitoring systems for river water quality : comparison of experiences |
1675 | Working at demolition and construction sites |