http://www.loc.gov/mods/v3 http://www.loc.gov/standards/mods/v3/mods-3-2.xsd
Tổng Hợp Thành phố Hồ Chí Minh
Sách là tài liệu tham khảo giúp giáo viên, học sinh tiểu học cơ sở có thêm tư liệu để dạy và học tốt hơn bộ môn Toán học.