000
00280nam a2200109Ia 4500
008
240421s9999 xx 000 0 und d
100
_a
Singh, J.P.
245
0
_a
Technology For The Blind Concept And Context
260
_a
New Delhi
_b
Kanishka
_c
2007
300
_a
271p.
942
_c
BK
999
_c
14457
_d
14457