http://school50.pupils.ru/upload/school_50/information_system_749/3/0/3/1/5/item_303157/information_items_property_109227.pdf
http://school50.pupils.ru/upload/school_50/information_system_749/3/0/3/1/7/item_303173/information_items_property_109236.pdf
27 Март 2020, 404 просмотра.