Columbia subject headings:
Harvard subject headings:
Berni, Antonio, 1905-1981--Exhibitions.
González, Beatriz, 1938---Exhibitions.
Graphic arts, Latin American--20th century--Exhibitions.
Graphic arts, Puerto Rican--20th century--Exhibitions.
Princeton subject headings:
Art festivals--Puerto Rico.
Berni, Antonio, 1905-1981--Exhibitions.
González, Beatriz, 1938---Exhibitions.
Graphic arts--Latin America--Exhibitions.
Graphic arts--Puerto Rico--Exhibitions.