A collection of standards documents for Braille.
- by: Perkins, International Council on English Braille (ICEB), National Library Service for the Blind and Physically Handicapped Library of Congress (NLS) and UNESCO
- published: Perkins, ICEB and NLS, Washington D.C., 2013, ISBN 978-0-8444-9564-4
- language: English
Refer to the official documents at the website of the Brailleschriftkomitee der deutschsprachigen Länder
Please refer to the official government document.
See the official documents at the ONCE website