000 00321nam a2200121Ia 4500
008 130706s9999 xx 000 0 und d
020 _a0394340434
050 0 0 _aQD 31.2 H 49 1985
100 1 _aHerron, J. Dudley
245 1 0 _aUnderstanding chemistry /
_cJ. Dudley Herron
300 _ap.
942 _2lcc
_kQD 31.2 H 49 1985
999 _c11705
_d11705