Columbia subject headings:
Harvard subject headings:
Archival materials--Digitization--Congresses.
Archival materials--Digitization--Germany--Congresses.
Archives--Technological innovations--Congresses.
Archives--Technological innovations--Germany--Congresses.
Princeton subject headings:
Archival materials--Digitization--Congresses.
Archival materials--Digitization--Germany--Congresses.
Archives--Technological innovations--Congresses.
Archives--Technological innovations--Germany--Congresses.