Reference

V. A. Kuryuchkin, V. A. Ponomarev, L. N. Parfenova, M. V. Kachkin, V. I. Ashcheulov (1999): Formation of concretions in bumble bees; [Ru; 1 tab. Date: 20.I.1999]. – In: FILONCHIKOV, A. V. (ed.). Actual Problems of Science in Agro-Industrial Complex. The Jubilee Inter-College Scientific-Practical Conference. Abstracts. Vol. 1. Kostroma (Kostroma State Agricultural Academy) – : 79 - 80.