Columbia subject headings:
De Poli, Paolo, 1905-1996--Criticism and interpretation.
Enamel and enameling--Italy--History--20th century.
Harvard subject headings:
De Poli, Paolo, 1905-1996--Criticism and interpretation.
Enamel and enameling--Italy--History--20th century.
Princeton subject headings:
De Poli, Paolo, 1905-1996--Criticism and interpretation.
Enamel and enameling--Italy--History--20th century.