000 00212nam a2200073Ia 4500
008 170817s9999 xx 000 0 und d
100 _aSharma.H.S
245 0 _aVigyan Tatha Pravaraniya Shiksha Evam Iska Shikshan
260 _bRadha Prakashan Agra
999 _c39291
_d39291