000 00286nam a2200121Ia 4500
008 230125s9999 xx 000 0 und d
100 _aLavkre, P.J.
_96521
245 0 _aVigyan or Aap
250 _a1st
260 _bNew Delhi:National Book Trust
_c2012
300 _a127
942 _cBK
999 _c116035
_d116035