Columbia subject headings:
Authors, German--19th century--Biography.
Authors, Swedish--19th century--Biography.
Hansson, Ola, 1860-1925.
Harvard subject headings:
Authors, German--19th century--Biography
Authors, Swedish--19th century--Biography
Hansson, Ola, 1860-1929.
Princeton subject headings:
Authors, German--19th century--Biography.
Authors, Swedish--19th century--Biography.
Hansson, Ola, 1860-1925.