000 00256nam a2200109Ia 4500
008 211209s1975 xx 000 0 und d
041 _aeng
100 _aSINGH, ARJUN
245 _aMODERN PHYSICS
260 _aNEW DELHI
_bSUNIL BOOKS
_c1975
300 _a240
999 _c100286
_d100286