00267nam a2200109Ia 4500008004100000041000800041082001900049100001800068245003800086260002500124300000800149211209s1977    xx            000 0 und d  aeng  a669.82 N77 GIL  aGILCHRIST J D  aFUELS, FURNACES AND REFRACTORIES   bPERGAMON PRESSc1977  a368