Peculiarities of development of the black poplar (pópulus nígra) in different forestry conditions, Middle Volga, RussiaNatalia M. Trots, Vasily B. Trots, Sergey V. Obuschenko, Dmitry A. Akhmatov and Rishat R. AbdulvaleevBIO Web Conf., 17 (2020) 00034DOI: https://doi.org/10.1051/bioconf/20201700034