TY JOUR TI PROTECTED ORCHIDS IN THE KEMEROVO DISTRICT KW Kemerovo region KW Orchids KW population KW vitality KW spatial arrangement KW age structure JO Bulletin of Kemerovo State University. Series: Biological, Engineering and Earth Sciences AU Kovrigina, L.N. AU Filippova, A.V. AU Romanova, N.G. AU Mongush, B.O. PY 2017 IS 2017 PB Kemerovo State University