Mayflies (Ephemeroptera) collected by J. Omer-Cooper in the Eastern Cape Province, South Africa, with a description of a new genus and species (Notonurus cooperi) /
Crass, R. S.
Mayflies (Ephemeroptera) collected by J. Omer-Cooper in the Eastern Cape Province, South Africa, with a description of a new genus and species (Notonurus cooperi) / by R. S. Crass - London : Royal Entomological Society, 1947 - 124-128 p. : ill. ; 27 cm - Proceedings of the Royal Entomological Society of London. Series B, Taxonomy ; 16 .
Mayflies (Ephemeroptera) collected by J. Omer-Cooper in the Eastern Cape Province, South Africa, with a description of a new genus and species (Notonurus cooperi) / by R. S. Crass - London : Royal Entomological Society, 1947 - 124-128 p. : ill. ; 27 cm - Proceedings of the Royal Entomological Society of London. Series B, Taxonomy ; 16 .