000 00310nam a2200121Ia 4500
008 191024s9999||||xx |||||||||||||| ||und||
020 _a8188473308
100 _aBagachi Na Ku
245 0 _aRasayanik Thathwom Ki Khoj Ka Ithihas
260 _bVani Prakashan
_aNew Delhi
_c2010
650 _aScience
942 _cBK
999 _c54696
_d54696