Reference

N. N. Blagoveshchenskaya (1969): Mutual relations between bees and plants as the main factor of their evolution; [Ru. Date: 14.IV.1969]. – In: SHAMURIN, V. F. (ed.). Problems in Anthecology. The Symposium on Anthecology (Perm, 26-30 May 1969). Abstracts. Leningrad (Nauka) – : 16 - 17.