Columbia subject headings:
Engonopoulos, Nikos, 1907-1985--Exhibitions.
Harvard subject headings:
Engonopoulos, Nikos, 1907-1985--Catalogues raisonnés.
Engonopoulos, Nikos, 1907-1985--Criticism and interpretation.
Engonopoulos, Nikos, 1907-1985--Exhibitions.
Princeton subject headings:
Engonopoulos, Nikos, 1907-1985--Exhibitions.