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Kai Bird Martin J. Sherwin "American Prometheus" J. Robert Oppenheimer - booxworm.lk . , Kai Bird Martin J. Sherwin "American Prometheus: The Triumph and Tragedy of J. Robert Oppenheimer", 20 . " " ? Kai Bird Martin J. Sherwin J. Robert Oppenheimer . , . " " . , , . . , , . "American Prometheus" " , ." (Sinhala) : " , ." () : " , ." " ." " ." " . ." " , ." booxworm.lk , booxworm.lk "American Prometheus: The Triumph and Tragedy of J. Robert Oppenheimer" , . 3 - 1-43 1 , , , 3. . 9 , , . . : American Prometheus: The Triumph and Tragedy of J. Robert Oppenheimer : Kai Bird Martin J. Sherwin ISBN : 9780375726262 : : 2005 : 784 :