Columbia subject headings:
Harvard subject headings:
Children's literature--History and criticism--Congresses
Children--Books and reading--Germany--Congresses
German wit and humor--Juvenile literature--Congresses.
Wit and humor, Juvenile--Congresses.
Princeton subject headings:
Children's literature--History and criticism--Congresses.
German wit and humor--Juvenile--Congresses.
Wit and humor, Juvenile--Congresses.