1906
Gordon Welchman, English-American mathematician and author (died 1985)
Gordon Welchman, English-American mathematician and author (died 1985)
Gordon Welchman, English-American mathematician and author (died 1985)
English cryptanalyst and mathematician (1906–1985)
Gordon Welchman, English-American mathematician and author (died 1985)
Gordon Welchman, English-American mathematician and author (died 1985)