TY JOUR TI THE USE POSSIBILITY ASSESSMENT OF WATER LETTUCE (PISTIA STRATIOTES) AND SMALL DUCKWEED (LEMNA MINOR) FOR THE AQUATIC ENVIRONMENT PHYTOREMEDIATION KW water lettuce (Pistia stratiotes) KW small duckweed (Lemna minor) KW aquatic environment phytoremediation KW heavy metals JO Bulletin of KSAU AU Sorokina, G.A. AU Zlobina, Y.V. AU Bondareva, L.G. AU Subbotin, M.A. PY 2013 IS PB Krasnoyarsk State Agrarian University