000 00375nam a2200169Ia 4500
008 200208s9999 xx 000 0 und d
020 _a8186209425
082 _aH 500
100 _a"Dwivedi, Mahaveer Prasad"
245 0 _aVigyan-varta
260 _aHapur
260 _bSambhavana Prakashan
260 _c2003
300 _a168p.
650 _aScience
942 _cB
999 _c223261
_d223261