000 00260nam a2200109Ia 4500
008 200906s9999 xx 000 0 und d
082 _a539 S5288
100 _aNARAYANA,S.R.S
245 0 _aMODERN PHYSICS
260 _aNEW DELHI
_bSULTANCHAND
_c1981
942 _cBK
999 _c61836
_d61836