Bulletin de la Société entomologique de France
More editions
77ie Transactions of the Royal entomological Society ofLondon, 87 : 353-384.
1951. - Hymenoptera. 2. Symphyta. Section (a). Handbooks for the Identification
of British Insects, 6 (2a): 1-49. 1952. - Hymenoptera. 2. Symphyta Section (b).