Columbia subject headings:
Arlt, Roberto, 1900-1942--Congresses.
Döblin, Alfred, 1878-1957--Congresses.
Harvard subject headings:
Arlt, Roberto, 1900-1942--Congresses.
Döblin, Alfred, 1878-1957--Congresses.
Princeton subject headings:
Arlt, Roberto, 1900-1942--Congresses.
Döblin, Alfred, 1878-1957--Congresses.