000 00253nam a2200097Ia 45e0
008 181001s2018 xx 000 0 und d
100 _aChaturvedi J.C
245 0 _aSpherical Harmonic
260 _aAgra
_bStu. Frend.co. Agra
942 _2ddc
_cBK
999 _c23
_d23