Pollen Preferences of Three Osmia Species (Hymenoptera) Reference:Raw, Anthony. (1974). Pollen Preferences of Three Osmia Species (Hymenoptera). Oikos. 25. 54-60. 10.2307/3543545.URL:https://www.researchgate.net/publication/236686062_Pollen_Preferences_of_Three_Osmia_Species_Hymenoptera
