The state and prospects of using Central Russian bee colonies of the “Orlovsky” typeN.N. Grankin, S.N. Bakina, A.P. Tyapkina, T.V. Fedyaeva and E.A. FominaE3S Web Conf., 254 (2021) 01037DOI: https://doi.org/10.1051/e3sconf/202125401037