Columbia subject headings:
Harvard subject headings:
Appraisal of archival materials--Germany--Congresses.
Archival materials--Conservation and restoration--Germany--Congresses.
Archives--Law and legislation--Germany--Congresses.
Princeton subject headings:
Appraisal of archival materials--Germany--Congresses.
Archival materials--Conservation and restoration--Germany--Congresses.
Archives--Law and legislation--Germany--Congresses.