Shop › A Key to the Adults of the British Emphemeroptera. SP47. JM Elliott & UH Humpesch Image 1 of 1 A Key to the Adults of the British Emphemeroptera. SP47. JM Elliott & UH Humpesch £10.00 Add To Cart Added! You Might Also Like Desmids of the English Lake District. - SP42 The Phytoplankton of Windermere - SPEC10 British Fresh and Brackish Water Gastropods - SP13 Freshwater Algae: Their microscopic world explored - (SPEC16) - £60.00 The Parasitic Copepoda & Branchiura of British Freshwater Fishes - SP46