000 00286nam a2200109Ia 4500
008 190719s9999 xx 000 0 und d
100 _aS.K Gupta & Others
245 0 _aMachanics & Electronic Devices B.S.C.I Sem II
260 _aN.D
_bR.Chand
_c2017
650 _aPhysics
942 _cBK
999 _c15370
_d15370