Tài liệu TTNT Chương 1,2

http://www.mediafire.com/file/he1djmswl7euiv3/BaiGiangTTNTChuong1%262.ppt

 

http://www.mediafire.com/file/he1djmswl7euiv3/BaiGiangTTNTChuong1%262.ppt

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