Columbia subject headings:
Harvard subject headings:
Homeless persons--Austria--Vienna--Case studies.
Poor--Austria--Vienna--Case studies.
Poor--Austria--Vienna--History--20th century--Sources.
Unemployed--Austria--Vienna--Case studies.
Vienna (Austria)--Social conditions--Case studies.
Vienna (Austria)--Social conditions--Sources.
Working class--Austria--Vienna--History--20th century--Sources.
Princeton subject headings:
Vienna (Austria)--Social conditions.