000 00278nam a2200121Ia 4500
008 211209s1980 xx 000 0 und d
041 _aeng
082 _aARO
100 _aARORA C L
245 _aPHYSICS
260 _aNEW DELHI
_bS CHAND AND COMPANY LTD.
_c1980
300 _a1235
999 _c18088
_d18088