Reference

A. V. Andreyev (1999): Apoidea as a resource insect group, its seasonal dynamics and relative diversity in the guild on alfalfa; p. 13. [En. Date: 12.IX.1999]. – In: BEREZIN, M. V. (compiler). The 5th International Colloquium on Social Insects (Moscow, 4-8 October 1999). Abstracts. Moscow (Moscow State University) – .