XIII. On the classification of British Crabronidae (Hymenoptera)
Perkins, R. C. L. (Robert Cyril Layton), 1866-1955
Article
1913
Transactions of the Entomological Society of London
61
383--398
BioStor
English
London, The Society,
BioStor: https://biostor.org/reference/50485 DOI: https://doi.org/10.1111/j.1365-2311.1913.tb01782.x