"2004-10-29Z"^^ . "1916-01-09Z"^^ . . . . . "2004Z"^^ . . "British entomologist" . . "1916Z"^^ . . "Twinn, Peter"@en . "Peter Frank George Twinn"@en . . "Peter Frank George Twinn (9 January 1916 \u2013 29 October 2004) was a British mathematician, World War II codebreaker and entomologist. The first professional mathematician to be recruited to GC&CS. Head of ISK from 1943, the unit responsible for decrypting over 100,000 Abwehr communications."@en . "Peter Frank George Twinn"@en . . . . . . . .