http://www.loc.gov/mods/v3 http://www.loc.gov/standards/mods/v3/mods-3-2.xsd
Giải thích các khái niệm cơ bản, các sự kiện nổi bật, các nhân vật tiêu biểu của Việt Nam và thế giới gắn với chương trình môn lịch sử trong nhà trường các cấp