http://www.loc.gov/mods/v3 http://www.loc.gov/standards/mods/v3/mods-3-2.xsd
Nội dung sách trình bày các vấn đề về phép toán hai ngôi trên một tập, nhóm, nhóm con, nhóm đối xứng,...
Group theory,Group theory,Lý thuyết nhóm,Lý thuyết nhóm
Outlines, syllabi, etc,Study and teaching,Đề cương, bài giảng,Dạy và học