Columbia subject headings:
Gruyter, Jos de, 1965---Exhibitions.
Thys, Harald, 1966---Exhibitions.
Harvard subject headings:
Art, Belgian--21st century--Exhibitions.
Conceptual art--Exhibitions.
Gruyter, Jos de, 1965---Exhibitions.
Thys, Harald, 1966---Exhibitions.
Princeton subject headings:
Gruyter, Jos de, 1965---Exhibitions.
Thys, Harald, 1966---Exhibitions.