Columbia subject headings:
Della Monica, Gennaro, 1836-1917--Exhibitions.
Harvard subject headings:
Della Monica, Gennaro, 1836-1917--Exhibitions.
Della Monica, Gennaro, 1836-1917--Themes, motives--Exhibitions.
Italy--In art--Exhibitions.
Landscape painting, Italian--19th century--Exhibitions.
Landscape painting, Italian--20th century--Exhibitions.
Princeton subject headings:
Della Monica, Gennaro, 1836-1917--Exhibitions.