000 00272nam a2200121Ia 4500
008 200131s9999 xx 000 0 und d
082 _a530
100 _aKulshrestha Hemant
245 _aChemical Science
260 _bUpkar Agra-
300 _a264
650 _aSCIENCE
999 _c226638
_d226638