000 00283nam a2200121Ia 4500
008 130409s9999 xx 000 0 und d
100 _aB.N NARAYANA AND RAO
245 _aPHYSICS
260 _bWILEY INDIA PUB.
_c1989
300 _a348
650 _aPhysics
_bB.SC.
942 _2ddc
_cBK
999 _c12527
_d12527