Columbia subject headings:
Architects--France--Biography.
Architecture--Conservation and restoration--France.
Architecture--France--History--19th century.
Viollet-le-Duc, Eugène-Emmanuel, 1814-1879.
Harvard subject headings:
Architects--France--Biography
Architecture--Conservation and restoration--France.
Architecture--France--History--19th century
Viollet-le-Duc, Eugène-Emmanuel, 1814-1879
Princeton subject headings:
Architects--France--Biography.
Architecture--Conservation and restoration--France.
Architecture--France--History--19th century.
Viollet-le-Duc, Eugène-Emmanuel, 1814-1879.