Columbia subject headings:
Harvard subject headings:
Architecture, Domestic--Europe, Central--Congresses.
Architecture, Domestic--Europe, Northern--Congresses.
Architecture, Medieval--Europe, Northern--Congresses.
Dwellings, Prehistoric--Europe, Central--Congresses.
Dwellings, Prehistoric--Europe, Northern--Congresses.
Europe, Central--Antiquities--Congresses.
Europe, Northern--Antiquities--Congresses.
Farm buildings--Europe, Central--Congresses.
Farm buildings--Europe, Northern--Congresses.
Princeton subject headings:
Architecture, Domestic--Europe, Central--Congresses.
Architecture, Domestic--Europe, Northern--Congresses.
Dwellings, Prehistoric--Europe, Central--Congresses.
Dwellings, Prehistoric--Europe, Northern--Congresses.
Europe, Central--Antiquities--Congresses.
Europe, Northern--Antiquities--Congresses.
Farm buildings--Europe, Central--Congresses.
Farm buildings--Europe, Northern--Congresses.