The content of heavy metals in the habitat of birds, Zeya-Bureya plainA.P. Pakusina, T.P. Platonova, S.A. Fokin, S.A. Lobarev and T.V. GulenovaE3S Web of Conf., 462 (2023) 03037DOI: https://doi.org/10.1051/e3sconf/202346203037