TY JOUR TI CULTIVATION OF MYCELIUM AND THE STUDY OF THE PHYTOPATHOGENICITY OF CERTAIN XYLOTROPHIC BASIDIOMYCETES UNDER IN VITRO CONDITIONS KW JO Bulletin of Nizhnevartovsk State University AU Maramokhin, E.V. AU Sirotina, M.V. AU Zontikov, D.N. PY 2020 IS PB Nizhnevartovsk State University