World braille usage.

Bibliographic Details
Corporate Authors:	Unesco, Library of Congress. National Library Service for the Blind and Physically Handicapped
Format:	Government Document Book
Language:	English
Published:	Paris, France : Washington, D.C. : UNESCO ; National Library Service for the Blind and Physically Handicapped, Library of Congress, 1990.
Edition:	[Rev. ed.].
Subjects:	Blind > Printing and writing systems > Bibliography. Blind > Books and reading > Bibliography.

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