Analysis and assessment of the level of biological risks of activities of enterprises of the agro-industrial complex at the regional levelAlexandr Shemyakin, Yuliya Lyashchuk, Alexey Martynushkin, Konstantin Ivanishchev, Elena Strokova and Alexandr KrasnikovE3S Web Conf., 258 (2021) 06057DOI: https://doi.org/10.1051/e3sconf/202125806057