000 00293nam a2200121Ia 4500
001 15421
008 150525s9999 xx 000 0 und d
020 _a0-07-255553-X
100 _aChang Raymond
245 _aUnderstanding Chemisry
260 _aBoston
_bMcgraw-Hill
_c2005
650 _aCHEMISTRY
999 _c51237
_d51237