000 00280nam a2200109Ia 4500
008 191024s9999||||xx |||||||||||||| ||und||
100 _aKeerthi Swaroop Rawath
245 0 _aParamanovigyan
260 _bNational Publishing House
_aNew Delhi
_c1984
650 _aScience
942 _cBK
999 _c54752
_d54752