Published Online: Dec 08, 2020
Page range: I - V
DOI: https://doi.org/10.2478/asn-2020-0028
© 2020 Dimcho Zahariev, published by Sciendo
This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International License.
Dimcho Zahariev
Department of Plant Protection, Botany and Zoology, Faculty of Natural Sciences,
Konstantin Preslavsky University of ShumenShumen, Bulgaria