000 00298nam a2200133Ia 4500
008 221229s9999 xx 000 0 und d
100 _aAGARWAL, B.S.
245 0 _aMODERN PHYSICS
250 _a1
260 _aMEERUT
_bKEDAR NATH RAM NATH
_c1998
300 _a186
650 _aPHYSICS
942 _cBK
999 _c9998
_d9998