Columbia subject headings:
Art galleries, Commercial--Italy--San Gimignano--Exhibitions.
Art--Italy--San Gimignano--Exhibitions.
Galleria continua--History--Exhibitions.
Harvard subject headings:
Art galleries, Commercial--Italy--San Gimignano--Exhibitions.
Art--Italy--San Gimignano--Exhibitions.
Galleria continua--History--Exhibitions.
Princeton subject headings:
Art galleries, Commercial--Italy--San Gimignano--Exhibitions.
Art--Italy--San Gimignano--Exhibitions.
Galleria continua--History--Exhibitions.