. http://thuviensinhhoc.com/index.php?option=com_content&view=article&id =124 9:ap-an thi- hsg-tnh-ngh-an-2009-2010-mon-toan-bng-a&catid= 112: -thi- tng-hp&Itemid=915 http://thuviensinhhoc.com/index.php?option=com_content&view=article&id =125 0:ap-an. thi- hsg-tnh-ngh-an-2009-2010-mon-toan-bng-a&catid= 112: -thi- tng-hp&Itemid=915 http://thuviensinhhoc.com/index.php?option=com_content&view=article&id =125 0:ap-an thi- hsg-tnh-ngh-an-2009-2010-mon-toan-bng-b&catid= 112: -thi- tng-hp&Itemid=915