Columbia subject headings:
Garden squares--Austria--Linz--Exhibitions.
Landscape gardening--Austria--Linz--Exhibitions.
Linz (Austria)--History--Exhibitions.
Parks--Austria--Linz--Exhibitions.
Harvard subject headings:
Open spaces--Austria--Linz.
Parks--Austria--Linz.
Public spaces--Austria--Linz.
Urban gardens--Austria--Linz.
Princeton subject headings:
Garden squares--Austria--Linz--Exhibitions.
Landscape gardening--Austria--Linz--Exhibitions.
Linz (Austria)--History--Exhibitions.
Parks--Austria--Linz--Exhibitions.