000 00254nam a2200121Ia 4500
008 211004s9999 xx 000 0 und d
245 _aCHEMISTRY TODAY
260 _c2019-2019
500 _a"2,3,4,5"
500 _a28
500 _aFEB-MAY
942 _cBV
999 _c21627
_d21627