TY JOUR TI THE INFLUENCE OF SILICON DIOXIDE «KOVELOS-SORB» ON GROWTH CHARACHTERISTICS OF RHODODENDRON ROSEUM (LOISEL.) REHDER CULTIVATED IN VITRO KW JO Bulletin of Nizhnevartovsk State University AU Nemtsova, Y.V. AU Harin, A.V. AU Razlugo, I.A. PY 2020 IS PB Nizhnevartovsk State University