Columbia subject headings:
Libraries--Austria--Vienna--History.
Rachinger, Johanna, 1960-
Österreichische Nationalbibliothek--History.
Harvard subject headings:
Libraries--Austria--Vienna--History.
Österreichische Nationalbibliothek--History.
Princeton subject headings:
Libraries--Austria--Vienna--History.
Österreichische Nationalbibliothek--History.