. . "1919Z"^^ . . "Alan Cottrell"@en . . . . . . . "Sir Alan Howard Cottrell, FRS (17 July 1919 \u2013 15 February 2012) was an English metallurgist and physicist."@en . "2012-02-15Z"^^ . . "British metallurgist and physicist" . "Cottrell, Alan Howard, Sir"@en . "1919-07-17Z"^^ . "2012Z"^^ .