Velutina - Dov'è. "Mappa degli avvistamenti". Stop-Velutina. "Gefahr für Honigbienen? Immer mehr asiatische Hornissen". ZDF (in German). Deutsche Presse-Agentur...
30 KB (2,956 words) - 11:17, 7 November 2024
ISBN 9783642726491. Ruttner, Friedrich (2003). Naturgeschichte der Honigbienen [Natural history of the Honey bee] (in German) (2 ed.). Kosmos. ISBN 9783440094778...
5 KB (429 words) - 22:42, 2 June 2024
1956, p. 351-359. (in German) Friedrich Ruttner: Naturgeschichte der Honigbienen [Natural History of Honeybees], Franckh-Kosmos-Verlag, Stuttgart, 1992...
6 KB (782 words) - 16:49, 12 January 2023