http://www.loc.gov/mods/v3 http://www.loc.gov/standards/mods/v3/mods-3-2.xsd
Tuyển tập 41 bộ đề toán 12 ôn luyện thi Tú tài
Đề mẫu, phương pháp, bài giải, thang điểm
mathematics - problems, exercises, etc,mathematics - study and teaching ( secondary )