Keywords: Henry Dudeney.jpg Henry Ernest Dudeney 1857 “1930 http //liveweb archive org/http //www liveinternet ru/users/kakula/post160769180/ 1910 author PD-old Original upload log en wikipedia Wdwd //tools wikimedia de/~magnus/commonshelper php CommonsHelper en wikipedia Henry+Dudeney jpg 2011-07-18 04 29 Materialscientist 556×681× 38444 bytes <nowiki> Henry Ernest Dudeney 1857 “1930 http //liveweb archive org/http //www liveinternet ru/users/kakula/post160769180/ ca 1910 ~~~ PD-old </nowiki> 1857 births 1930 deaths 19th-century mathematicians 20th-century mathematicians People of the United Kingdom |