http://www.loc.gov/mods/v3 http://www.loc.gov/standards/mods/v3/mods-3-2.xsd
Từ chủ nghĩa tư bản lên chủ nghĩa xã hội
Chính trị--Quy luật kinh tế--Thời kỳ quá độ--Chủ nghĩa xã hội