Columbia subject headings:
Harvard subject headings:
Businesspeople--Austria--Biography.
Ritschl & Co.
Ritschl, Gotthard von, 1863-1920.
Road construction industry--Austria--History.
Princeton subject headings:
Businesspeople--Austria--Biography.
Ritschl & Co.
Ritschl, Gotthard von, 1863-1920.
Road construction industry--Austria--History.