. . "David William Hann" . "David W. Hann"@en . "W."@en . "D. W." . . "D." . "D.W Hann" . "W" . "David W Hann" . . "William" . "D. W. Hann" . . "Hann"@en . "David"@en . "D. W. Hann" . . "D.W" .