000 00297nam a2200121Ia 4500
008 191024s9999||||xx |||||||||||||| ||und||
020 _a818713710X
100 _aRajeev Saxena
245 0 _aMahan Khagol Sasthri
260 _bBharathi Prakashan
_aNew Delhi
_c2000
650 _aScience
942 _cBK
999 _c54791
_d54791