All / Books / Plants All Books Other Algae Fish Plants Invertebrates Riverflies Courses Merchandise Sale Guide to Aquatic Hyphomycetes - SP30. £10.00 Add To Cart A Guide to the Morphology of the Diatom Frustule - SP44 - PHOTOCOPY ONLY £7.00 Add To Cart Investigations of Phytoplankton, with special reference to water usage - OP13 £5.00 Add To Cart Desmids of the English Lake District. - SP42 £6.00 Add To Cart The Phytoplankton of Windermere - SPEC10 £15.00 Add To Cart