http://www.loc.gov/mods/v3 http://www.loc.gov/standards/mods/v3/mods-3-2.xsd
Tổng quan về địa hình - kinh tế - phong tục của các châu lục địa trên thế giới
Quyển sách cung cấp những kiến thức về điều kiện kinh tế, xã hội, chính trị phong tục tập quán của các nứơc Âu Châu.
Economic conditions,Politics and government,Social conditions