. . . "Darrel Hankerson"@de-DE . "D. R." . "Hankerson, Darrel R. Mathématicien" . "D.R" . "D. Hankerson" . "Darrel R. Hankerson" . . "Hankerson, Darrel R. Mathematician" . "Darrel R." . . "D. Hankerson" . "D.R Hankerson" . "Hankerson"@fr-FR . "Mathématicien Darrel R. Hankerson" . "Mathematiker Darrel R. Hankerson" . "Darrel R. Hankerson"@en . . "D." . . . "D. R. Hankerson"@pl-PL . "R."@en . . "Hankerson, Darrel R. Mathematiker" . "1900" . . . . "Darrel"@en . . "D. R. Hankerson" . "Hankerson"@en . . "Darrel Hankerson" . "Mathematician Darrel R. Hankerson" .