Güler, Y. and Sorkun, K. 2007. Pollen preferences of <i>Hoplosmia bidentata</i> and <i>Lithurgus cornutus</i> (Hymenoptera: Megachilidae). Entomologica Fennica. 18, 3 (Sep. 2007), 174–178. DOI:https://doi.org/10.33338/ef.84395.