Working Group on Mobility Aids for the Visually Impaired and Blind books & textbook
Electronic Travel Aids: New Directions for Research
Committee on Vision Working Group on Mobility Aids for the Visually Impaired and Blind
National Academies Press /1986-02-01 Paperback / 120 Pages
isbn-10: 0309077915 / isbn-13: 9780309077910
