000
00273nam a22001097a 4500
020
_a
9788173915768
082
_a
371.911
_b
SIN.T
100
_a
Singh, J P
245
_a
Technology for the blind :
_b
concept and context
260
_a
New Delhi:
_b
Kanishka;
_c
2020
942
_c
BK
999
_c
326195
_d
326195