000 00292nam a2200121Ia 4500
100 _aSingh, J P
020 _a81-7391-576-8
942 _cBK
245 _aTechnology for the blind
_bconcept and context
260 _aKanishika pub, New Delhi
_c2003
082 _a371.911 Sin
300 _axii,271
999 _c26564
_d26564