%0 Journal Article %A O. A. Efremova %A I. V. Prokopenko %A N. V. Prokhorova %T Heavy metals in soil cover of Ulianovsk city children park %J Vestnik Samarskogo universiteta. Estestvennonaučnaâ seriâ %D 2011 %P 173-178 %N 8 %I mathdoc %U http://geodesic.mathdoc.fr/item/VSGU_2011_8_a20/ %G ru %F VSGU_2011_8_a20