000 00275nam a2200109Ia 4500
008 230222s9999 xx 000 0 und d
100 _aDevaraj Singh
245 2 _aA Textbook of Engineering Physics
250 _a1
260 _bDhanpat Rai & Co.,New Delhi
_c2016
942 _cBK
999 _c31516
_d31516