Columbia subject headings:
Hofer, Walther, 1920-2013.
World politics--20th century.
Harvard subject headings:
Hofer, Walther, 1920-
Hofer, Walther, 1920-2013.
World politics--20th century
Princeton subject headings:
Hofer, Walther, 1920-2013.
World politics--20th century.