000 00288nam a2200121Ia 4500
008 170912s9999 xx 000 0 und d
082 _a540 A G/C
100 _aA GROUP OF AUTHORS
245 0 _aCHEMISTRY
260 _bNATIONAL COUNCIL OF EDUCATION-
_c1989
300 _a396
942 _cTB
999 _c29975
_d29975