http://www.loc.gov/mods/v3 http://www.loc.gov/standards/mods/v3/mods-3-2.xsd
Bài tập hóa học với chương trình phân ban (Ban A - lớp 12)
Luận văn tốt nghiệp Đại học sư phạm ngành Hóa Khóa 19
Trường Đại học Cần Thơ, Khoa Sư phạm, Bộ môn Hóa
chemistry - study and teaching ( secondary )