000 00326nam a2200145Ia 4500
008 211026s9999||||xx |||||||||||||| ||und||
035 _a135
082 _a540
100 _aC N R Rao
245 0 _aUnderstanding Chemistry
260 _bUniversites Press Pub.
_c2018
300 _a298
500 _aS/SI/18-19/5458
942 _cBK
999 _c136
_d136