Before revision: Manifesto The Athens Charter for the Restoration of Historic Monuments was produced by the participants of the First International Congress of Architects and Technicians of Historic Monuments organized by the International Museums Office and held in Athens in 1931 .
After revision: Manifesto The Athens Charter for the Restoration of Historic Monuments was produced by the participants of the First International Congress of Architects and Technicians of Historic Monuments organized by the International Museums Office and held in Athens in