Keys to the British species of Ephemeropters, with keys to the genera of the nymphs.
Series: Freshwater Biological Association of the British Empire. Scientific publications.; no. 7; Scientific publications (Freshwater Biological Association) ;; no. 7.
Publisher: Freshwater Biological Association
Published: 1942
Place of publication: Ambleside, Westmorland
Language: eng
Number of pages: 64
Subjects: Mayflies.
Notes: Rev. ed. published in 1954 under title: A revised key to the adults of the British species of Ephemeropters.
Includes bibliography.