Harutyunyan, H.R. “EFFICIENT WAYS OF COMBATING AGAINST PEAR PSYLLA”. Proceedings of the YSU B: Chemical and Biological Sciences 51, no. 2 (243) (June 13, 2017): 132–134. Accessed November 24, 2024. https://journals.ysu.am/index.php/proceedings-chem-biol/article/view/vol51_no2_2017_pp132-134.