00445nam a2200169 a 450000500170000008200210001710000190003824500240005726000270008130000150010869000120012370000200013596400250015599700120018099900170019295200660020920251203090949.0  a539.776,bD, bha  aBhagavantam, S  aPhysics of crystals  aDelhibMacmillanc1981  a164p, 22cm  aPhysics  aRadhakrishna, S  bEngc100de010fg_  a41169 W  c25028d25028  02104070aPUbPUd1998-04-08l0o539.776, D, bhap41169yBK