"1908-07-15Z"^^ . "Zygalski, Henryk"@en . "Polish mathematician and cryptologist" . . . . . . . "1978Z"^^ . "1908Z"^^ . . . "Henryk Zygalski"@en . "Henryk Zygalski (Polish pronunciation: [\u02C8x\u025Bnr\u0268k z\u0268\u02C8\u0261alski]; 15 July 1908 in Pozna\u0144 \u2013 30 August 1978 in Liss) was a Polish mathematician and cryptologist who worked at breaking German Enigma ciphers before and during World War II."@en . . "1978-08-30Z"^^ .