Columbia subject headings:
Harlequin (Fictitious character) in art.
Picasso, Pablo, 1881-1973. Harlequin with a Mirror--Exhibitions.
Harvard subject headings:
Picasso, Pablo, 1881-1973--Exhibitions.
Princeton subject headings:
Harlequin (Fictitious character) in art.
Picasso, Pablo, 1881-1973. Harlequin with a Mirror--Exhibitions.