Columbia subject headings:
Conceptual art--Switzerland--Basel--Exhibitions.
Happenings (Art)--Switzerland--Basel--Exhibitions.
Kaprow, Allan--Exhibitions.
Harvard subject headings:
Artists' books--Germany.
Conceptual art--Switzerland--Basel--Exhibitions.
Happenings (Art)--Switzerland--Basel--Exhibitions.
Happenings (Art)--Switzerland--Basel.
Ice--Switzerland--Basel.
Kaprow, Allan--Exhibitions.
Princeton subject headings:
Conceptual art--Switzerland--Basel--Exhibitions.
Happenings (Art)--Switzerland--Basel--Exhibitions.
Kaprow, Allan--Exhibitions.