Columbia subject headings:
Harvard subject headings:
Immigrants--Austria--Vienna.
Minority business enterprises--Austria--Vienna.
Self-employed--Austria--Vienna.
Vienna (Austria)--Emigration and immigration--Economic aspects.
Princeton subject headings:
Immigrants--Austria--Vienna.
Minority business enterprises--Austria--Vienna.
Self-employed--Austria--Vienna.
Vienna (Austria)--Emigration and immigration--Economic aspects.