XV. Notes on the Ephemeridæ, by Dr. H. A. Hagen; compiled (with remarks) by the Rev. A. E. Eaton, M.A
Published in Transactions of The Royal Entomological Society of London, in 1873, in volume 21, pages 381-406
Date published:1873
Published in Transactions of The Royal Entomological Society of London, in 1873, in volume 21, pages 381-406
Date published:1873