http://www.loc.gov/mods/v3 http://www.loc.gov/standards/mods/v3/mods-3-2.xsd
Hướng dẫn giải bài tập sinh học 10
Nguyễn Thu Huyền, Phạm Thị Thu Nga, Lê Thị Phượng
Study and teaching ( secondary ),Dạy và học (trung học)