http://www.loc.gov/mods/v3 http://www.loc.gov/standards/mods/v3/mods-3-2.xsd
Luyện giải và ôn tập hóa học lớp 10
Phạm Văn Hoan, Phạm Thị Bích Đào, Đỗ Anh Tuấn (Chủ biên)
Problems, exercises, etc.,Câu hỏi, bài tập