Columbia subject headings:
Authors, German--20th century--Biography--Congresses.
Wolfskehl, Karl, 1869-1948--Congresses.
Harvard subject headings:
Wolfskehl, Karl, 1869-1948--Congresses.
Princeton subject headings:
Authors, German--20th century--Biography--Congresses.
Wolfskehl, Karl, 1869-1948--Congresses.