Columbia subject headings:
Architecture--Italy--History--20th century.
Petrucci, Concezio, 1902-1946--Criticism and interpretation.
Harvard subject headings:
Architects--Italy.
Architecture--Italy--History--20th century
Petrucci, Concezio, 1902-1946--Criticism and interpetation.
Princeton subject headings:
Petrucci, Concezio, 1902-1946.