TY JOUR TI THE ECOLOGICAL ASSESSMENT OF THE GRASSY VEGETATION CROPQUALITY ON ARTIFICIALLY CREATED SOILS KW ecosystem KW artificially created soils KW recultivation KW biochemical analysis KW protein KW cellulose KW fat KW projective covering JO Bulletin of KSAU AU Kachayev, G.V. PY 2014 IS PB Krasnoyarsk State Agrarian University