. "Cowan, George A."@en . . . . . "American physical chemist, businessman and philanthropist" . . "1920Z"^^ . "George A. Cowan (/ka\u028A\u0259n/; February 15, 1920 \u2013 April 20, 2012) was an American physical chemist, a businessman and philanthropist."@en . . . . . "2012-04-20Z"^^ . "2012Z"^^ . . . "1920-02-15Z"^^ . "George A. Cowan"@en . "George Cowan"@en . "1951Z"^^ . . . "1991Z"^^ . .