Lớp KT09

https://sites.google.com/site/diendanlopketoan/

 http://hcdhkt16.blogspot.com/2009/11/huong-dan-thi-sinh-k14-hoan-chinh-ai.html

 http://forum.dng.vn/showthread.php?t=9427


 sách hay
 http://www.mediafire.com/?yxxv6zvco2jjw