TY  - BOOK
AU  - Zahl,Paul A.
TI  - Blindness; modern approaches to the unseen environment
U1  - 362.4 
PY  - 1950///. [Reprent 1963]
CY  - Princeton
PB  - Princeton Univ. Press
KW  - Blind
N1  - Contents.--History and welfare.--Education and psychology.--Vocational considerations.--The military blinded.--Time-tested boons to the blind.--Exploration of new technological horizons.--Ophthalmological factors
ER  -