by: timonov15.10.2016Ученическо творчествоLeave a Comment on ПРЕЗЕНТАЦИИ ПО ХИМИЯ И ОПАЗВАНЕ НА ОКОЛНАТА СРЕДА %d0%b6%d0%b5%d0%bb%d1%8f%d0%b7%d0%be-1 %d0%bc%d0%b0%d0%b7%d0%bd%d0%b8%d0%bd%d0%b8 %d0%b1%d0%b5%d0%bb%d1%82%d1%8a%d1%86%d0%b8-1
%d0%b6%d0%b5%d0%bb%d1%8f%d0%b7%d0%be-1