Columbia subject headings:
Labor movement--Austria--Lower Austria--History--19th century.
Labor--Austria--Lower Austria--History--19th century.
Working class--Austria--Lower Austria--History--19th century.
Harvard subject headings:
Factory system--Austria--Lower Austria--History--19th century.
Labor movement--Austria--Lower Austria--History--19th century.
Labor--Austria--Lower Austria--History--19th century.
Working class--Austria--Lower Austria--History--19th century.
Princeton subject headings:
Labor movement--Austria--Lower Austria--History--19th century.
Labor--Austria--Lower Austria--History--19th century.
Working class--Austria--Lower Austria--History--19th century.