Reference

I. S. Isayeva (1988): The role of wild pollinators in fruit growing; [Ru; 1 tab. Date: 11.VII.1988]. – In: ZAKHAROV, A. A. (ed.). Biological Basis of Utilisation of Beneficial Insects. [A Collection of Scientific Papers]. Moscow (A N. SEVERTSOV Institute of the Evolutionary Morphology and Ecology of Animals, Academy of Sciences of the USSR) – : 206 - 209.