Reference

N. N. Blagoveshchenskaya (1996): The fauna and nesting of bees of the genus Colletes LATR. in the Ulyanovsk province; [Ru. Date: 22.XI.1996]. – In: Ecology and Reservation of Bees. The 1st International Scientific-Practical Conference. ([Rybnoye in Ryazan Province], 17-19 December 1996). Abstracts. Rybnoye in Ryazan province (Academy of Apiculture) – : 15 - 16.