. . . . . . . "Classification" . "Classification"@en . . "Spectra of bright southern stars photographed with the 13-inch Boyden Telescope as a part of the Henry Draper Memorial and discussed by Annie J. Cannon under the dir. of Edward C. Pickering, Dir. of the Observatory" . . . . . . "Spectra of bright southern stars, photographed with the 13-inch Boyden telescope as a part of the Henry Draper memorial" . "Spectra of bright southern stars photographed with the 13-inch Boyden telescope as a part of the Henry Draper Memorial"@en . . . . . "Catalogs" . "Catalogs"@en . "Spectra of bright southern stars photographed with the 13-inch Boyden telescope as a part of the Henry Draper memorial" .