Columbia subject headings:
Harvard subject headings:
Entrepreneurship--Germany--Berlin.
Entrepreneurship--Moral and ethical aspects--Germany--Berlin.
Immigrants--Germany--Berlin--Economic conditions.
Minority business enterprises--Germany--Berlin.
Turks--Germany--Berlin--Economic conditions.
Princeton subject headings:
Entrepreneurship--Germany--Berlin.
Immigrants--Germany--Berlin--Economic conditions.
Minority business enterprises--Germany--Berlin.