Columbia subject headings:
Austria--Relations--Poland.
Poland--Relations--Austria.
Polish people--Austria--History.
Polish people--Austria--Vienna--History.
Vienna (Austria)--Ethnic relations.
Harvard subject headings:
Austria--Relations--Poland.
Poland--Relations--Austria.
Polish people--Austria--History.
Polish people--Austria--Vienna--History.
Vienna (Austria)--Ethnic relations.
Princeton subject headings:
Polish people--Austria--Vienna.
Vienna (Austria)--History.