"2004"^^ . "Celary (2004)" . "Celary, W. 2004. A Comparative Study on the Biology of Macropis fulvipes (Fabricius, 1804) and Macropis europaea Warncke, 1973 (Hymenoptera: Apoidea: Melittidae). Folia biologica (Krak\u00F3w), 52 (1-2): 81-85." . . "Celary (2004)" . . "2004"^^ . .