Reference

V. N. Gramma, V. G. Nadvorny (1991): «Entomological reserves» [small reserved territo-ries] as reservations of beneficial insects; [En. Date: 10.VI.1991]. – In: DOLIN, V. G. (ed.). XII. Internationales Symposium überEntomofaunistik Mitteleuropas. (Kiew, 25.-30. September 1988). Verhandlungen. Kiev (Naukova Dumka) – : 57 - 60.