TY - JOUR T1 - Coleoptera and Lepidoptera (Insecta) diversity in the central part of Sredna Gora Mountains (Bulgaria) JF - Bulletin of the Entomological Society of MaltaBulletin of the Entomological Society of Malta Y1 - 2019 A1 - Kostova, R. A1 - Bekchiev, R. A1 - Beshkov, S. SP - 75 EP - 95 VL - 10 ER -