Columbia subject headings:
Harvard subject headings:
Sokopp Familie--History.
Tonka, Oswalda, 1923---Family.
Vienna (Austria)--History.
Working class families--Austria--Vienna--Genealogy.
Working class families--Austria--Vienna--History.
Princeton subject headings:
Sokopp Familie--History.
Tonka, Oswalda, 1923---Family.
Vienna (Austria)--History.
Working class families--Austria--Vienna--Genealogy.
Working class families--Austria--Vienna--History.