Columbia subject headings:
Art critics--Italy--Biography.
Art, Italian--19th century.
Art, Italian.
Intellectuals--Italy--Biography.
Martelli, Diego, 1839-1896.
Harvard subject headings:
Art criticism--Italy--History--19th century.
Art critics--Italy--Biography.
Art, Italian
Art, Modern--19th century--Italy.
Martelli, Diego, 1839-1896.
Princeton subject headings:
Martelli, Diego, 1839-1896.
Painters--Italy--Biography.