TY  - BOOK
AU  - HERSH, Marion A.
AU  - JOHNSON, Michael A. 
TI  - Assistive Technology for Visually Impared and Blind People
SN  - 9781846288661
U1  - 362.41 HER 
PY  - 2008///
CY  - London , 
PB  - Springer Verlag London Limited
KW  - Assistive Technology
N1  - Include References and Index
ER  -