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![]() Date: 2013-07-02 05:04:49Braille Assistive technology Library of Congress National Library Service for the Blind and Physically Handicapped Perkins School for the Blind Pratt–Smoot Act Braille music NLS Ruth Baker Pratt Disability Blindness Accessibility | Source URL: loc.govDownload Document from Source WebsiteFile Size: 63,96 KBShare Document on Facebook |