. . . . "David Stephan" . . . . . . . . . . . . . . . . "Membre de Cornell university, Ithaca, N.Y." . . . . . "Powers" . . "David Stephan Powers" . . . . . . "VIAF" . . . "12135995"^^ . "Membre de Cornell university, Ithaca, N.Y." . . "1990-01-19" . "2013-07-25" . "David Stephan Powers"@fr . . . . "Membre de Cornell university, Ithaca, N.Y."@fr . . . . . . "0000000381728177" . "2013-07-25"^^ .