000 00277nam a2200121Ia 4500
008 211209s9999 xx 000 0 und d
020 _a9789384588021
041 _aeng
082 _a540 GAD
100 _aGADAG
245 _aENGINEERING CHEMISTRY
260 _bI K INTERNATIONAL
999 _c77807
_d77807