1451 | Herbarium Image: Ranunculus peltatus |
1452 | Nassula, |
1453 | Cyanophyte, |
1454 | Hydrurus, |
1455 | Resting spore |
1456 | Green algae, |
1457 | Flow protection criteria for adult salmon - phase 3 case studies |
1458 | Fragilaria, |
1459 | Fisheries statistics 1994 : salmonid and freshwater fisheries statistics for England and Wales |
1460 | Herbarium Image: Oenanthe lachenalii |
1461 | Herbarium Image: Carex nigra |
1462 | Herbarium Image: Potamogeton filiformis |
1463 | Welsh sheep dip monitoring programme : 1999 |
1464 | Herbarium Image: Juncus bulbosus |
1465 | Herbarium Image: Galium palustre |
1466 | Herbarium Image: Dactylorhiza incarnata |
1467 | Upgrading of Nox Reduction Equipment Fitted to Large Fossil Fuel Power Station Boilers |
1468 | Marine phytoplankton : standard methodologies: final draft : biology laboratory procedures manual. Section C : test methods and procedures |
1469 | Herbarium Image: Ceratophyllum demersum |
1470 | Herbarium Image: Ranunculus peltatus |
1471 | Herbarium Image: Festuca arenaria var. arenaria |
1472 | River quality : July 1991 - June 1992 |
1473 | Herbarium Image: Chara vulgaris |
1474 | Mallomonas, |
1475 | Synedra, |