TY JOUR TI THE AGE STRUCTURE OF ERYTHRONIUM SIBIRICUM (LILIACEAE) IN ARTIFICIAL PHYTOCENOSIS KW Erythronium sibiricum KW age struc-ture KW forest-steppe zone KW Western Siberia JO Bulletin of KSAU AU Sedelnikova, L.L. PY 2017 IS PB Krasnoyarsk State Agrarian University