Thông báo Lịch học của lớp NCS Khóa 15

https://drive.google.com/file/d/1z7ojr0Ta0tCWpehc4OfCs9TjXrN-IlDg/view?usp=sharing

https://drive.google.com/file/d/1z7ojr0Ta0tCWpehc4OfCs9TjXrN-IlDg/view?usp=sharing

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