000 00273nam a22001097a 4500
020 _a9788173915768
082 _a371.911
_bSIN.T
100 _aSingh, J P
245 _aTechnology for the blind :
_b concept and context
260 _aNew Delhi:
_bKanishka;
_c2020
942 _cBK
999 _c326195
_d326195