000 00284nam a2200109Ia 4500
008 190719s9999 xx 000 0 und d
100 _aS.K.Gupta & Others
245 0 _aMechanics & Electronic Devices B.Sc.I sem II
260 _aN.D
_bR.Chand
_c2015
650 _aPhysics
942 _cBK
999 _c15124
_d15124