Columbia subject headings:
Harvard subject headings:
Architecture--Europe--Designs and plans--Congresses.
Architecture--Germany--Designs and plans--Congresses.
Archive buildings--Europe--Design and construction--Congresses.
Archive buildings--Germany--Design and construction--Congresses.
Archives--Europe--History--Congresses.
Archives--Germany--History--Congresses.
Princeton subject headings:
Architecture--Europe--Designs and plans--Congresses.
Architecture--Germany--Designs and plans--Congresses.
Archive buildings--Europe--Design and construction--Congresses.
Archive buildings--Germany--Design and construction--Congresses.
Archives--Europe--History--Congresses.
Archives--Germany--History--Congresses.