000 00280nam a2200121Ia 4500
008 230524s9999 xx 000 0 und d
100 _aSharma, H. S.
245 0 _aVigyan Shikshan
260 _bRadha Prakashan
_aAgra
_c2015
300 _a224P
650 _aEducation
942 _cREF
999 _c6759
_d6759