Columbia subject headings:
Authors, Austrian--20th century--Biography.
Authors, Austrian--20th century.
Petzold, Alfons, 1882-1923.
Harvard subject headings:
Authors, Austrian--20th century--Biography
Petzold, Alfons, 1882-1923.
Princeton subject headings:
Authors, Austrian--20th century--Biography.
Authors, Austrian--20th century.
Petzold, Alfons, 1882-1923.