Evolution of architectural heritage conservation theory 并列题名：Evolution of architectural heritage conservation theory Conservation of architecture heritage in Britain today History of architectural conservation 并列题名：Conservation of architecture heritage in Britain today Policies of architectural heritage conservation in East Asian and European countries The architectural heritage of a nation Study on the architectural thoughts and conservation theory of John Ruskin 并列题名：Study on the architectural thoughts and conservation theory of John Ruskin 并列题名：Policies of architectural heritage conservation in East Asian and European countries