Columbia subject headings:
Harvard subject headings:
Book thefts--Germany--History--20th century--Congresses.
Confiscations--Germany--History--20th century--Congresses.
Libraries and national socialism--Congresses.
Libraries--Germany--History--20th century--Congresses.
Princeton subject headings:
Book thefts--Austria--Vienna--Congresses.
Book thefts--Congresses.
Book thefts--Germany--Congresses.
Books--Provenance--Congresses.
Holocaust, Jewish (1939-1945)--Congresses.
Libraries and national socialism--Congresses.
World War, 1939-1945--Confiscations and contributions--Congresses.