000 00299nam a2200109Ia 4500
008 201121s9999 xx 000 0 und d
100 _aRoy,A.K.
245 0 _aIndian Journal Of Pure & Appied Physics
260 _bNew Delhi,Council Of Scientific &Industrial Research
300 _c513
942 _cBV
999 _c16234
_d16234