Columbia subject headings:
Harvard subject headings:
Burri, Alberto, 1915-1995--Congresses.
Burri, Alberto, 1915-1995--Exhibitions.
Signorelli, Luca, 1441?-1523--Congresses.
Signorelli, Luca, 1441?-1523--Exhibitions.
Princeton subject headings:
Burri, Alberto, 1915-1995--Congresses.
Burri, Alberto, 1915-1995--Exhibitions.
Signorelli, Luca 1441?-1523--Exhibitions.
Signorelli, Luca, 1441?-1523--Congresses.